M2.2 Forces and Motion

Unbalanced forces make an object:

• Come to rest
• move at constant velocity
• accelerate
• explode

What is the effect of increasing the mass of an object on its acceleration, assuming the force applied is constant?

• Acceleration increases

• Acceleration decreases

• Acceleration remains the same

• Acceleration becomes zero

Which of the following is true about an object in free fall?

• It moves upwards

• It accelerates due to gravity

• It has a constant velocity

• It experiences balanced forces

What is the effect of friction on a moving object?

• It increases the object's speed

• It changes the object's direction

• It decreases the object's speed

• It has no effect on the object's speed

Your stopping distance can be impacted by mass of your vehicle

• True

• False

Which quantity is measured in newtons?

• density
• energy
• pressure
• weight

What is the unit of force in the International System of Units (SI)?

• Pascal

• Watt

• Newton

• Joule

Which of the following is a scalar quantity?

• Speed

• Displacement

• Force

• Velocity

For a given braking force, the greater the speed of the vehicle, the greater the

stopping distance.

• true

• false

What happens to an object when the net force acting on it is zero?

• It changes direction

• It explodes

• It remains at rest or moves with constant velocity

• It accelerates