Forces/Newton's Laws Review

Force = Mass x Acceleration

When you give your friend a lift on your bike you have to pedal harder to keep the same speed.

In physics, what word describes a "push or pull" on an object?

What force always works to oppose motion between two surfaces?

What is the net force acting on the red box?

What unit do we measure forces in?

Which of Newton's Laws says an action force creates and equal and opposite reaction force?

Which type of friction is shown in the picture?

It is much easier to carry your backpack when it is empty rather than when it is full.

What type of friction is shown in the following picture?

When you are standing in a subway car, and it suddenly stops, your body flies forward.

A bulldog is running on the beach when it trips and falls end over end.

Which of Newton's Laws says the force on an object is equal to its mass times acceleration?

You paddle backwards in a kayak and you move forward.

What is the known value of gravity on Earth?

What do we call the downward force of gravity on an object's mass?

Which of Newton's Laws says objects in motion will continue in motion unless acted on by force?

A climber pulls down on a rope causing his body to lift upward and rise up along the rope.

Two bumber cars collide into each other and each car jolts backwards.

A smaller cannonball leaves a cannon much faster than a larger, heavier cannonball.

If a 3kg ball is accelerated at 3 m/s², how much force was applied?