Which ball needs the LEAST force to move? Multiple choice)
A. ping-pong ball
B. tennis ball
C. soccer ball
D. basketball
100
What object does it take the most force to push? (31-32)
A. car
B. bus
C. bicycle
D. skateboard
100
You have four balls. Their masses are 100 grams, 200 grams, 300 grams, and 400 grams. Which one will accelerate MOST if thrown with equal force? (21-22)
A. the 100-gram ball
B. the 200-gram ball
C. the 300-gram ball
D. the 400-gram ball
100
A car is traveling at a speed of 100 kilometers per hour. Suddenly, it starts going faster. What caused the increase in speed? (27-28)
A. velocity
B. a force
C. inertia
D. gravitation
200
How far something moves over a certain amount of time.
Speed
200
A force that pulls everything toward Earth.
Gravity
200
You have three balls. Their masses are 100 grams, 500 grams, and 1,000 grams. Which has the greatest gravitational force? (17-18)
A. the 100-gram ball
B. the 500-gram ball
C. the 1,000-gram ball
D. None of them. They have the same weight.
200
Tony is pushing a box across the floor. Marta is pushing on the box with equal force, but in the opposite direction. What is the outcome? (17-18)
A. Tony pushes the box toward Marta.
B. Marta pushes the box toward Tony.
C. The box stays in the same place.
D. The box moves twice as quickly.
200
Tim is pushing a box across the floor. Mary decides to help him. What is the result? (29-30)
A. The mass of the box decreases.
B. Friction is reduced by half.
C. The box has less inertia.
D. The box moves faster.
300
The location of an object.
Position
300
Free point!!!!
Congratulations!
300
What force keeps moons in orbit around planets? (49-50)
A. mass
B. gravitation
C. friction
D. magnetism
300
Ball 1 and Ball 2 are traveling at the same speed. Ball 2 has twice the mass of Ball 1. Which of the following must be true? (23-24)
A. Ball 1 and Ball 2 have equal volume and density.
B. Ball 1 has twice the inertia of Ball 2.
C. Ball 1 has twice the acceleration of Ball 2.
D. Ball 2 was thrown with twice the force of Ball 1.
300
A pitcher throws a baseball toward a batter. The batter hits the ball and sends it flying toward first base. What caused the ball to change direction? (63-64)
A. the acceleration of the pitcher
B. the force of the batter
C. the mass of the ball
D. the inertia of the pitcher
400
Any change in the speed or the direction of an object in motion.
Acceleration
400
A force that slows down or stops motion between objects that are touching.
Friction
400
Which factors affect the strength of the gravitational attraction between two objects? (21-22)
A. mass and acceleration
B. mass and distance
C. acceleration and force
D. force and mass
400
The following is a list of objects and the amount of force applied to each. Which object will probably move the fastest? (19-20)
1 (mass=10 grams) (Force=40 newtons)
2 (mass=20 grams) (Force=40 newtons)
3 (mass=30 grams) (Force=50 newtons)
4 (mass=50 grams) (Force=55 newtons)
A. 1
B. 2
C. 3
D. 4
400
A car accelerates from 30 km/hr to 40 km/hr. Over the same time period, a bicycle accelerates from 0 km/hr to 10 km/hr. Which of the following is the same for both the car and the bicycle? (31-32)
A. speed
B. velocity
C. momentum
D. acceleration
500
A property of matter that keeps an object from changing speed or direction unless a force acts on it.
Inertia
500
An object is moving at a constant speed. The object changes direction and continues moving at the same speed. What caused the object to change direction? (55-56)
A. momentum
B. a change in speed
C. inertia and gravity
D. a force acting on it
500
Which factor would increase the gravitational attraction between two objects? (61-62)
A. more mass
B. greater velocity
C. faster speed
D. greater acceleration
500
A force is causing an object to move at a constant speed. A second force causes the object to change diraction. If the two forces are equal, how does the object's speed change? (21-22)
A. Its speed increases.
B. Its speed decreases.
C. Its speed does not change.
D. Its speed accelerates.
500
Ball A travels 60 kilometers in 3 hours. Ball B travels 40 kilometers in 2 hours. Ball A is larger than Ball B. Which of the following is true? (59-60)
A. Ball A is traveling faster than Ball B.
B. Ball B is traveling faster than Ball A.
C. Ball A and Ball B are travelign at the same speed.
D. The speeds of the balls cannot be compared because the balls are not the same size.