Question 6 Your best friend wins the lottery and buys a G6 airplane. She takes y

Question

Question 6

Your best friend wins the lottery and buys a G6 airplane. She takes you on a ride and once you are in the air cruising, she let's you fly for 25 s. If the plane is cruising at 1100 km/hour, how far did you travel while you were flying?

Question 7

The car beside you at a stoplight revs its engine - he wants to race! Wisely, you decide not to race, but he peels out anyway. In only 3.25 seconds he reaches a speed of 95 km/hr. What was his acceleration (in m/s2)?

Question 8

The SpaceX rocket launches from its pad (without exploding this time) at a uniform acceleration of 5.85 m/s2. After two minutes, how fast is it traveling?

Question 9

The car beside you at a stoplight revs its engine - he wants to race! Wisely, you decide not to race, but he peels out anyway. Soon he is driving at 18 m/s, but he loses control and crashes into several sitsgns. If it takes him 2.17 seconds to come to a stop, what is his deceleration?

Question 10

Which of the following is NOT a fundamental force of the universe?

Explanation / Answer

6. t = 25 s = 25/3600 hr

d = vt = (1100 km/h) (25/3600 hr)

d = 7.64 km ....Ans

7. vi = 0, vf = 95 x 1000 m / 3600 s = 26.4 m/s

t = 3.25 s

vf = vi + a t => 26.4 = 0 + 3.25a

a = 8.1 m/s^2

8. v = 0 + (5.85 m/s^2)(2 x 60 s)

v = 702 m/s

9. vf = vi - a t

0 = 18 - 2.17 a

a = 8.3 m/s^2

10. friction

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