Forces Physics

What is the equation that links distance, force and work done?

• work done = force x distance

• work done = force ÷ distance

• work done = distance ÷ force

What is the equation that links acceleration, change in velocity and time?

• acceleration = change in velocity x time

• acceleration = change in velocity ÷ time

• acceleration = time ÷ change in velocity

What is the equation that links mass, momentum, and velocity?

• momentum = mass x velocity

• momentum = mass ÷ velocity

• momentum = velocity ÷ mass

Tags

NGSS.HS-PS2-2

What is the momentum of a toy car of mass 500 g, travelling at a velocity of 30 m/s?

• 0.15 kgm/s

• 15 kgm/s

• 15 000 kgm/s

• 15 000 000 kgm/s

Tags

NGSS.HS-PS2-2

Which of the following is a unit for acceleration?

• km/s

• m/s²

• mi/hr

• ft

A dog runs with an initial speed of 7.5 m/s on a waxed floor. It slides to a stop in 15 seconds. What is the acceleration?

• -7.5 m/s

• -7.5 m/s²

• -0.5 m/s²

• 0.5 m/s

Tags

NGSS.MS-PS2-2

A spring has a spring constant of 5 N/cm. What is its extension when loaded with 15 N?

• 3 cm

• 5 cm

• 3 m

• 5 m

Why is person B having a hard time moving down the hill?

• Person B has more friction than person A.

• Person B has the same friction as person A.

• Person B is out of shape.

• Person B has less friction has person A.

This is an example of what kind of force?

• Balanced Force

• Pushing Force

• Gravity Force

• Unbalanced Force

Tags

NGSS.3-PS2-1

A force that slows or stops motion when objects rub together.

• Friction

• Push

• Pull

• Magnetism