Physics Introduction [Kinematics and Projectile motion]

Show all work for the following questions:

1. A car travels on a straight country highway for 5.0 km at 100 km/h, then through a more populated area for another 5.0 km at 60 km/h. The average velocity of the car is…

2. How long will it take to drive the 315 km from Banff non-stop to Brooks at an average speed of 70 km / h?

3. At what distance before a construction zone should a warning sign be placed so that a car could slow from 27.8 m/s (100 km/h) to the reduced legal speed of 13.9 m/s (50 km/h) without braking? Assume a constant acceleration due to friction of –1.50 m/s2.

4. An 1800 kg automobile travelling at 16.7 m/s impacts into a concrete barrier and stops in 4.20 x 10-1s. The acceleration on the automobile is…

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Physics Introduction [Kinematics and Projectile motion]

5. The police found a car 40 m from the base of a 20 m high cliff. How fast was the car going when it went over the cliff?

6. At the top of a 110m tall building, you throw a ball straight up in the air at 13.6 m/s. If the rock fall all the way to the bottom of the building, find:

a. The time the ball was in the air

b. The final velocity of the ball.

7. At the top of a 110m tall building you throw a Hulk straight down at 13.6m/s off the side. Find:a. The final velocity of the Hulk

b. The distance it traveled between the second and the third seconds.

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Physics Introduction [Kinematics and Projectile motion]

8. The Flash runs off a 200m high canyon cliff at 354.2km/h, and collides with the opposite wall of the canyon 121.2m away. How far did he drop during his flight over the canyon?

9. The Batmobile jumps the same 121.2m canyon but uses a 7.0o ramp while travelling 145km/h. At what height does the Batmobile impact the cliff (he ejected just prior to hitting the cliff and landed safely on the top of the cliff)?

10. If Batman ejected just prior to hitting the cliff, what initial velocity must he get from his ejector seat to reach the top of the cliff safely?

What would the acceleration be if the seat got to this speed in 15cm?

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Physics Introduction [Kinematics and Projectile motion]

11. Superman jumped the exact same cliff and landed safely beside Batman just on the other side at the same height. (he did not fly). If he jumped at an angle of 25o, what speed was he going when he jumped?

12. In the movie SPEED the bus jumped a 15.25m gap (50 ft) and landed at the same height. a. To complete this jump using a ramp at a 5.0o angle, what speed must the bus have been

going?

b. What maximum height would it have reached above the top of the jump?

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