Velocity vs. time graph shows the variation of velocity with time.
How did doubling the force affect the acceleration of the cart?
The acceleration is equal to the net force divided by the mass. If the net force acting on an object doubles, its acceleration is doubled. If the mass is doubled, then acceleration will be halved.
How does a fan cart illustrate Newton’s third law for every force in one direction there is an equal force in the opposite direction?
Place fan A on the cart and turn it on by clicking the ON/OFF button below. By blowing to the left, the fans exert a force on the cart that pushes it to the right. This illustrates Newton’s third law – Action Reaction: A force in one direction results in an equal force in the opposite direction.
How does changing the mass of the fan cart affect its acceleration?
With added mass, there a decrease in the rate of acceleration because the fan cart now has the added mass that resists the change in motion.
How do you think the number of fans will affect the carts acceleration?
I think the number of fans will affect the cart’s acceleration because the cart is causing it to accelerate faster every time a fan is added. Experiment : Select the BAR CHART tab and turn on Show numerical values. For each of the situations below, record the acceleration of the cart.
How many forces are applied to the fan cart?
In this situation, there are two forces exerted on the cart: air pushing backward on the fan, and air pushing forward on the sail. These two forces balance each other, and the cart does NOT move!
What will the motion of the cart be like when there is no force at all there is no friction in this mode?
What will the motion of the cart be like when there is no force at all there is no friction in this mode? (Without friction (and assuming the cart is free of any other contact interactions), the cart would continue at a constant speed indefinitely since there would be nothing to slow it down or speed it up.)
Would the cart’s final speed be higher or lower if the fan were set to medium instead of low?
The cart speeds up more on Medium. Force causes the speed of the cart to change. If more force is used, the speed the cart changes more quickly.
What would happen to the speed of the cart if several bags of cement were added to the cart?
What would happen to the speed of the cart if several bags of cement were added to the cart? The greater mass would slow down or decelerate the cart because the pulling force has remained the same.
What do you notice about the force and the product of mass and acceleration Ma?
According to Newton s Second Law of Motion, also known as the Law of Force and Acceleration, a force upon an object causes it to accelerate according to the formula net force = mass x acceleration. So the acceleration of the object is directly proportional to the force and inversely proportional to the mass.
How does a fan cart work?
The air pushes the sail forward and the sail pushes the air backward. Since only the sail is attached to the cart, the cart moves forward. Investigation 4: The fan pushes the air forward, and the air pushes the fan backward. Since the fan is attached to the cart, the cart is pushed backward.
What is a fan cart?
The Fan Cart is a large fan on a light-weight cart. It offers students the ability to perform kinematics and dynamics experiments with constant acceleration, variable mass, variable thrust, and variable thrust angle.
What is the relationship between acceleration and force?
Newton’s second law of motion describes the relationship between force and acceleration. They are directly proportional. If you increase the force applied to an object, the acceleration of that object increases by the same factor. In short, force equals mass times acceleration.
How does the force on the rifle compare with the force on the bullet and why?
The force on the rifle equals the force on the bullet. Yet, acceleration depends on both force and mass. The bullet has a greater acceleration due to the fact that it has a smaller mass.
What happens to an object when opposite forces are exactly equal?
Balanced forces are equal and opposite forces that act on the same object. That’s why they cancel out. Action-reaction forces are equal and opposite forces that act on different objects, so they don’t cancel out. In fact, they often result in motion.
What is the relationship of the hanging mass to the acceleration of the cart?
The weight of the hanging mass provides tension in the string, which helps to accelerate the cart along the track. A small frictional force will resist this motion.
How does friction affect conservation of momentum?
Friction between moving bodies and their surroundings means there is an external force acting on them, so that conservation of momentum is not applicable. In addition, a potential energy cannot be defined for the force of friction, so energy is not conserved when friction is present.
Why is the mass in F Ma not just equal to the mass of the cart?
why is the mass in net force=ma not just equal to the mass of the cart? If there cart was empty you would be quite correct, m would equal the mass of the cart. However, since there are additional masses at rest on the cart; these masses must be accelerating at the same rate as the cart.
What causes objects to slow down when they are no longer pushed?
Friction is a force that opposes the motion of objects; friction can cause objects to slow down. Air resistance is a type of friction.
What provided the force that made the cart speed up?
What provided the force that made the cart speed up? The fan.
How does force affect motion?
Forces affect how objects move. They may cause motion; they may also slow, stop, or change the direction of motion of an object that is already moving. Since force cause changes in the speed or direction of an object, we can say that forces cause changes in velocity. Remember that acceleration is a change in velocity.
When the lorry stops suddenly the crate continues to move forwards explain why?
The net force is zero. Explanation: While the truck in moving forward, the carte moves forward with the truck at the same velocity. When the trucks stops, the crate continues to move forward with the original velocity at which it had been traveling since there is no friction to stop the crate from moving.
How does net external force affect the objects acceleration?
The answer is that a change in motion is equivalent to a change in velocity. A change in velocity means, by definition, that there is an acceleration. Newton’s first law says that a net external force causes a change in motion; thus, we see that a net external force causes acceleration.
How quickly does a 100kg object accelerate when pushed with a 400N force?
How quickly does a 100kg object accelerate when pushed with a 400N force? m/s2 9. How quickly would the 50kg box accelerate if the person applied a 560N force? 11.2 m/s2 Hint: You cannot test this directly with the simulation.
How do you tell if velocity is increasing or decreasing?
If a>0, then velocity is increasing. If a<0, then velocity is decreasing. If a and v are the same sign, P is accelerating. If a and v are opposite signs, P is decelerating.