GCSE Physics Forces and Motion

What forces are acting on a bowling ball that is rolling down the lane?

• gravity and friction

• applied force, normal force, gravity, and friction

• gravity

• normal force and gravity

Tags

NGSS.MS-PS2-2

What is the scientific unit for force?

• meters per second

• meters per second squared

• Newton

• meters

An object in motion stays in motion, and an object at rest stays at rest unless acted on by an external force

• Law of Inertia

• Law of Acceleration

• Law of Action-Reaction

Which of the following is the best example of Newton's Law of Inertia (Law 1)?

• A car hitting a wall versus a plane hitting a wall

• A bird pushing it's wings down and the air pushing back up on the bird.

• A boy riding on a bike and flying over the handlebars when he hits a rock

• A person sitting in a chair

A contact force that resists the sliding motion between two objects that are touching.

• friction

• normal force

• non-contact force

• gravity

This diagram represents which of Newton's Laws?

• Law of Inertia

• Law of Acceleration

• Law of Action-Reaction

As mass of two objects increases, gravity...

• Decreases

• Increases

• Stays the same

Tags

NGSS.MS-PS2-4

Select which answers are examples of contact forces (select more than one)

• magnetism

• applied force

• friction

• gravity

What would be the acceleration of a projectile with a 30 kg mass being launched by piston force of 400 Newtons? (Acceleration = Force/Mass)

• 13.33

• 12,000 m/s²

• 12,000 meters

• 13.33 m/s²

Tags

NGSS.MS-PS2-2

If an astronaut is on the moon, her mass stays the same.

• True

• False

Tags

NGSS.MS-PS2-4