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1. Acceleration is a change in ______________ or

___________________.

- Acceleration includes:- starting- stopping- slowing down- speeding up- changing direction

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2.An object traveling at a constant speed does/does not accelerate because its speed does/does not change.

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3. What is the acceleration of the car between 4 and 6 seconds?

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4.The formula for average speed is

____________________________

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5. What is the average speed of the car after 5 seconds?

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6. What is the average speed of car A after 3 seconds?

Car A Car B

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. Match the graphs below to the statements.

7. A car traveled 50 m at 40 km/hr, then traveled 20 m at 30 km/hr

8. A car traveled 50 m at 30 km/hr, then traveled 20 m at 40 km/hr

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7. Match the graphs below to the statements.

9. A car decelerated (slowed down) from 40 km/hr to 30 km/hr, then traveled 30 m

10. A car traveled at 30 km/hr for 50 m, then accelerated

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11. When two forces are balanced:

A. No motion occursB. The object acceleratesC. The object continues in the same direction as before

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12. When an object is acted on by unbalanced forces, what ALWAYS happens?

A. No motion occursB. The object continues in the same

directionC. The object acceleratesD. The object stops

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13. What is the net force in the system below?

4 N 8 N

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14. What is the net force in the system below?

12 N

10 N

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15. Draw the graph for the following statement: A roller coaster going down a big hill.

Distance

Spee

d (k

m/h

r)

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16. Draw the graph for the following statement: A pitcher throwing a baseball.

Distance

Spee

d (k

m/h

r)

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17. Draw the graph for the following statement: A car traveling from one stop sign to the next.

Distance

Spee

d (k

m/h

r)

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18. For an experiment, the materials required are: toy car meter stickramp weightsstopwatch

The objective of the experiment is probably to:a. Test how friction affects the speed of the carb. Test how the angle of the ramp affects the

speed of a carc. Test how mass affects the speed of the car

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19. Explain how each item would be used in the experiment you chose in number 17.toy car meter stick stopwatch ramp weights

_________________________________________________________________________________________________________________________________________________

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20. If a car travels East at 60 mph, then changes direction and travels northeast at 60 mph, what happens to A. its speed?

B. Its velocity?

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9. A racecar is traveling around a track at a constant speed of 200 miles/hr. Which point on the track is it accelerating? Explain why/why not.

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10. The race car is traveling at a constant speed of 200 mi/hr all the way around the track. Explain why its velocity is different at each point A, B, and C.

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11. What is the difference between speed and velocity? Make a venn diagram

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12. What is acceleration? And how do you calculate it?

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13. A 4000 kg truck and a 1000 kg car are racing. 10,000 N of force is applied to each of them. What will be the acceleration of the truck and of the car? Remember, if F = ma, then A = F/m - The truck’s acceleration will be

_______ - The car’s acceleration will be _____Which will accelerate faster and by how

much?

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14. One of the laws of motion states, “Things in motion stay in motion unless an unbalanced force acts upon it.” When a marble is rolled across the floor, what is the unbalanced force that causes it to slow down and stop?

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15. Explain why a hailstone falling from 50 m will hurt a lot worse than a hailstone falling from 10 m if it hit you. (Remember, agravity = 9.8 m/s2)

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16. Calculate the force needed to accelerate a mass a 3000 kg mass at 6 m/s/s acceleration. (Hint: F=ma)

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17. Place the following statements in the correct space:

-Shows how fast an object is moving

- shows direction

- shows change in speed

-- shows change in direction

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18. In an experiment that you drop a ball from different heights to determine how the height affects the speed of the ball, which of the following will not change?– Speed– Velocity– Acceleration

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19. When doing an experiment with small rolling toys what would be the best lab safety equipment to wear?