Momentum & Rotational Motion

Momentum & Rotational Motion

12th Grade

12 Qs

quiz-placeholder

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Momentum & Rotational Motion

Momentum & Rotational Motion

Assessment

Quiz

Chemistry

12th Grade

Hard

NGSS
HS-PS2-1, HS-PS2-2, MS-PS2-1

+2

Standards-aligned

Created by

Emily Edlund

Used 1+ times

FREE Resource

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

As shown in the diagrams below, a lump of clay travels horizontally to the right toward a block at rest on a frictionless surface. Upon collision, the clay and the block stick together and move to the right. Compared to the total momentum of the clay and the block before the collision, the momentum of the clay-block system after the collision is:

can't be determined

greater

less

the same

Tags

NGSS.HS-PS2-2

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

If a 50-kg box is sliding on a frictionless surface with a certain velocity, and 10 pigeons land on it, what happens to the velocity of the box?

increases

decreases

stays the same

impossible to tell

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

A net force of 200 N acts on a 100-kg boulder, and a force of the same magnitude acts on a 130-g pebble for the same amount of time. How does the rate of change of the boulder's momentum compare to the rate of change of the pebble's momentum?

greater than

less than

equal to

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

4.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

A propeller with radius r rotates with constant angular velocity. What happens to its tangential velocity & tangential acceleration if the radius & velocity are doubled?

Both tangential velocity and tangential acceleration doubled.

The tangential velocity is doubled while tangential acceleration remains the same.

Both tangential velocity and tangential acceleration are quadrupled.

The tangential velocity is quadrupled while the tangential acceleration remains the same.

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Media Image

Children are playing in a roundabout and they want to spin faster. Assume no external forces are applied, what could be done to make it rotate faster?

Add more children at the edge of the roundabout.

Have all of them sit instead of standing up.

Have children with larger weights move to the center of the roundabout.

Add more children to the center of the roundabout.

Tags

NGSS.HS-PS2-1

6.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

A 5500-kg freight truck accelerates from 4.2 m/s to 7.8 m/s in 15 seconds by the application of a constant force. A) What impulse is experienced? B) How large of a force is exerted?

Answer explanation

A)

J = Δp

J = (5500)(7.8) - (5500)(4.2)

J = 19,800 kg*m/s

B)

J = Ft

19,800 = F(15)

F = 1320 N

Tags

NGSS.HS-PS2-1

7.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

A 0.045-kg golf ball is dropped from a height of 1.8 m and comes back up at a height of 1.2 m. A) What is the velocity of the ball right before it hits the ground? B) What is the rebound velocity? C) What impulse did the ball experience?

Answer explanation

A)
Potential Energy = Kinetic Energy

U = KE or PE = KE

(0.045)(9.8)(-1.8) = 1/2(0.045)v^2

v = -5.94 m/s

B)

KE = U or KE = PE

1/2 (0.45)v^2 = (0.045)(9.8)(1.2)

v = 4.85 m/s

C)

J = Δp

J = (0.045)(4.85)-(0.045)(-5.94)

J = 0.49 kg*m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS3-1

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