AP Physics I - Unit 6: Newtons Laws

3 forces act on a block. If the block is in equilibrium, which of the following must be true?

If a nonzero net force is acting on an object, then the object is definitely

An object (1 kg) moves in a circle (r = 1 meter) with a frequency of 2 HZ. Calculate the ƩF_c.

An object that weighs 20 N is in free fall. An upwards force of 20 N is applied to the object, what happens next?

A block is moving with a constant velocity across a frictionless table. Which forces act on the block?

A block is in free fall. What info do you still need to calculate the net force on the block?

What happens to the acceleration of the carts if the changes from A to B were made?

Which of the following is the tendency of an object to maintain its state of motion?

What happens to the acceleration of the cart if the applied force is increased to 1.0 N?

A ball is moving north. What direction must the net force be in?

Which of the following would NOT change if you were somehow transported to Neptune?

What happens to the acceleration of the cart from figure A to figure B?

An object is moving east and slowing down. What direction is the net force in?

Read the following question.

2 blocks of equal mass are stacked as shown in the picture. How does the F_N acting up on 2 compare the F_N acting up on 1

What happens to the acceleration of the cart if its mass is increased to 2.0 kg?

A system is moving at a constant velocity of 5 m/s east. Which of the following must be true?

A mass weighs 49 N and experiences a ƩF_x of 98 N. How fast is it moving after 5s?

Read the following image.

A net external force of 10N is applied to a 5kg block at rest. How fast is it moving after 10s?