AP Physics

If you are going forward and slowing down, what sign is the acceleration?

• positive

• negative

• it's impossible to tell

Tags

NGSS.HS-PS2-1

What does a parabola on a displacement or position time graph indicate?

• constant velocity

• at rest

• acceleration

What does a flat horizontal line on a position time graph indicate?

• constant velocity

• at rest

• acceleration

A 220 Kg crate is pushed horizontally with a force of 700 N. If the coefficient of kinetic friction is 0.20, calculate the acceleration of the crate.

• 1.02 m/s²

• 1.22 m/s²

• 1.42 m/s²

• 1.62 m/s²

Tags

NGSS.HS-PS2-1

Assuming both objects are at rest, which object is more massive? M1 or M2?

• M1 is more massive

• M2 is more massive

• both M1 and M2 are the same mass

Assuming both objects are at rest, which side of the string has more tension?

• There is more tension on the side by M1

• There is more tension on the side by M2

• The tension on both sides is the same

Tags

NGSS.HS-PS2-1

To find the normal force

• mg

• sin(θ)mg

• cos(θ)mg

• tan(θ)mg

Tags

NGSS.HS-PS2-1

A book is pushed across the table. It has a friction force of 50 N and a coefficient of friction of 0.30. Find the value normal force.

• 16.7 N

• 166.67 N

• 15 N

Which of the following is the best expression for the Normal Force?

• F_N = mg cos(ϴ)

• F_N = mg sin(ϴ)

• F_N = mg sin(180-ϴ)

• F_N = mg cos(90-ϴ)

Tags

NGSS.HS-PS2-1

If both boxes are at rest in the picture, what force is equal to the tension in the string?

• The weight of M1

• The weight of M2

• (M1)(g)cos28⁰

Tags

NGSS.HS-PS2-1