Motion and Forces

Newton's first law of motion is also known as the law of:

1. Gravitation
2. Reaction
3. Acceleration
4. Inertia

A resultant force of what size gives a 2 kg mass an acceleration of 3 m/s²?

1. 6 N
2. 1.5 N
3. 0.67 N
4. 5 N

Acceleration is the rate of change of:

1. Velocity
2. Displacement
3. Mass
4. Distance

An object moves at constant velocity. What is the resultant force on it?

1. Zero
2. Equal to its weight
3. Equal to its mass
4. Increasing steadily

What is the weight of a 5 kg mass where g = 10 m/s²?

1. 0.5 N
2. 5 N
3. 50 N
4. 15 N

According to Newton's third law, action and reaction forces are:

1. Unequal, acting in the same direction
2. Equal and opposite, acting on different bodies
3. Only present when bodies move
4. Equal and opposite, acting on the same body

The gradient of a distance-time graph gives:

1. Speed
2. Distance
3. Acceleration
4. Force