1
What do we call an object's resistance to change in motion?
Inertia
Which of the following tools help calculate speed? (select all that apply)
a. meter stick
b. spring scale
c. stopwatch
d. mass
A and C
Which of the following statements describes the relationship between speed and time?
a. The speed of an object decreases as the time it takes to travel increases.
b. The faster the speed of an object, the shorter the distance it can travel in a set time.
c. The faster the speed of an object, the less amount of time it takes to travel a set distance.
d. The speed of an object is equal to the amount of time it takes to travel a set distance.
b. The faster the speed of an object, the less amount of time it takes to travel a set distance.
A change in velocity is _______.
a. force
b. acceleration
c. inertia
d. mass
b. acceleration
What information is needed to calculate the speed of an object?
Distance and time
What is the formula for calculating the speed of an object?
Speed = Distance/time
A chemical change is _______.
a. when no new substance if formed
b. difficult to reverse
c. a mixture
d. the same as a physical change
b. difficult to reverse
If a car is travels 200 miles in 5 hours, what is the car's speed?
40 mph
Three friends race each other from the playground to the library. Which friend is the fastest?
a. the friend who arrives at the library last
b. the friend who has the newest shoes
c. the friend who is the tallest
d. the friend who arrives at the library first
d. the friend who arrives at the library first
What type of change produce substances with different properties that the original substance?
Chemical change
Car A and car B leave the store at 2pm. Both cars drives for one hour. Which car will be the farthest away at 3pm?
a. the slower car
b. Car A
c. Car B
d. the faster car
d. the faster car
If a soccer ball is rolling towards the goal and a player kicks the ball from the side, what happens to the ball?
a. it stops
b. it travels backwards
c. it changes direction
d. it continues in the same direction
c. it changes direction
If a bus travels 140 miles, a bike travels 10 miles, and a car travels 100, all for 2 hours, which is moving the fastest?
If Sue's car is traveling at a speed of 60 mph and is catching up to a car in front of her, which of the following could be the speed of the car in front of her?
a. 70 mph
b. 80 mph
c. 50 mph
d. 90 mph
c. 50 mph
A horizontal line on a position-time graph shows what type of motion?
a. constant speed
b. no movement
c. decrease in speed
d. acceleration
b. no movement
Which of the following is a fast chemical change?
a. rust forming on a bicycle
b. a match burning
c. fruit rotting
d. ice melting
b. a match burning
Brakes on a bicycle reduce motion because ______.
a. they stop the handlebars from moving.
b. the increase the force in the direction the bicycle is moving.
c. they push from the opposite direction the bicycle is moving.
d. they reduce all the forces on the bicycle.
c. they push from the opposite direction the bicycle is moving.
Joe is playing hockey. He skates up behind the puck that is moving towards the goal and hits the puck from behind it. What happens to the puck?
a. It speeds up
b. It continues to move at the same speed
c. It stops
d. It slows down
a. It speeds up.
Which of the following is an example of a physical change?
a. rust forming on a pipe
b. lighting a candle
c. chopped wood
d. rotting apple
c. chopped wood
What happens when a force if applied to an object that is not moving?
The object begins moving
What happens when a force is applied to an object that is moving?
It slows down, changes direction, or stops.
A horizontal line on a speed-time graph shows what type of movement?
a. no movement
b. an increase in speed
c. constant speed
d. a decrease in speed
c. constant speed
Friction acts in the _______ direction of motion.
opposite
What does a straight line in an upward slope on a distance-time graph show?
a. no movement
b. constant speed
c. decreased speed
d. acceleration
b. constant speed
In a distance-time graph, is time labeled on the x-axis or the y-axis?