Semester 2 Virtual Cumulative Exam (Force, Mass, and Motion)

Quiz
•
Science
•
8th - 9th Grade
•
Medium
+1
Standards-aligned
Cindy Mott
Used 2+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two football players are running toward each other. One football player has a mass of 105 kg and is running at 8.6 m/s. The other player has a mass of 90 kg and is running at -9.0 m/s. What is the momentum of the system after the football players collide?
93 kg · m/s
1,713 kg · m/s.
810 kg · m/s.
903 kg · m/s.
Tags
NGSS.MS-PS2-1
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gymnasts often practice on foam floors, which increase the collision time when a gymnast falls. What effect does this have on collisions?
The change in momentum needed to stop the gymnast is increased.
The change in momentum needed to stop the gymnast is decreased.
The force exerted by the floor on the gymnast decreases.
The force exerted by the floor on the gymnast increases.
Tags
NGSS.MS-PS2-1
NGSS.MS-PS2-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An object is moving north at a constant speed. A force of 5 N begins to push the object east at the same moment that a force of 5 N begins to push it west. What will happen to the object?
The object will turn toward the west.
The object will slow down and stop.
The object will accelerate toward the east.
The object will continue moving north.
Tags
NGSS.MS-PS2-2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A car has a mass of 1,200 kg. What is its acceleration when the engine exerts a force of 600 N? (Formula: F=ma)
600 m/s2
2 m/s2
1,800 m/s2
0.5 m/s2
Tags
NGSS.MS-PS2-2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A probe is launched from Earth and lands on Mars. The gravitational acceleration on Mars is 3.7 m/s2. Which statement best compares the mass and weight of the probe?
The mass of the probe remains the same, but the weight of the probe increases.
The mass of the probe remains the same, but the weight of the probe decreases.
The mass of the probe increases, but the weight of the probe remains the same.
The mass of the probe decreases, but the weight of the probe remains the same.
Tags
NGSS.MS-PS2-4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Luz, who is skydiving, is traveling at terminal velocity with her body parallel to the ground. She then changes her body position to feet first toward the ground. What happens to her motion?
She will continue to fall at the same terminal velocity because gravity has not changed.
She will speed up because air resistance will decrease and be less than gravity.
She will begin to fall in free fall because she will have no air resistance acting on her.
She will slow down because the air resistance will increase and be greater than gravity.
Tags
NGSS.MS-PS2-2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kiley, Jermaine, and Gunther are playing tug-of-war. Kiley and Jermaine are on the same side of the rope, and Gunther is on the other side. Kiley is exerting a force of 20 N, and Jermaine is exerting a force of 25 N. Which force would result in a balanced force for the game?
–45 N
–20 N
20 N
45 N
Tags
NGSS.MS-PS2-2
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