OCR C21st P4 Forces and Motion Revision

The unit for velocity is…?

Physics can explain the shape of the fireworks because...

A car travels 2.5km in 2 minutes what is the average speed?

What is the resultant force and in which direction is it acting?

The speed of an object in a certain direction is known as the …?

Which line A,B,C,D shows a stationary object?

What force do the jagged lines represent?

Describe this journey

Which line shows constant acceleration?

Bob has finally got the box moving at a constant, steady speed. What is the value of friction?

What is the acceleration of an object that accelerates from 20 m/s to 70m/s in 5 second?

True or False: It is possible for these graphs to describe the same journey

What is this the formula for:  ? = mass x velocity

Bob is trying to push the box but can't get it moving! What value is friction here?

Bob has managed to exert a greater force now! What is the resultant force?

Work done is equal to...

This rocket is accelerating. What can you conclude about the forces acting on the rocket?

What does a curved line tell you on a distance time graph?

Speed is equal to calculated using the equation:

On a distance time graph what does a straight line tell you?

If we assume no air resistance or friction, all GPE is transferred to __ when a lift descends?

Crumple zones work but extending the time for momentum change which…?

The speed of an object at a particular point in time is called the…?

What are the units for momentum?

What is the difference between velocity and speed?