Answers will only be rated if steps and explanations are given 15) You are makin

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Answers will only be rated if steps and explanations are given

15) You are making a circular turn in your car when you hit a big patch of ice, causing the force of friction between the tires and the road to become zero. While the car is on the ice, it

A) continues to follow the same circular path as initially

B) continues to follow a circular path, but with a radius larger than the original radius.

C) moves along a straight-line path.

D) moves along a path that is neither straight nor circular

16) A ly (light year) is the distance that light travels in one year. The speed of light is 3.00x 10^8 m/s. How many miles are there in a ly? (1mi= 1609m and 1yr= 365.25 days)

A) 9.49x 10^12 mi B) 2.87x 10^13 mi
C) 5.88x 10^12 mi
D) 9.46x 10^15 mi
E) 5.88x 10^15 mi

17) A large truck head-on with a cyclist. During the collusion

A) the truck exerts the same amount of force on the cyclist as the cyclist exerts on the truck.
B) The truck exerts a smaller amount of force on the cyclist than the cyclist exerts on the truck.
C) The truck exerts a greater amount of force on the cyclist than the cyclist exerts on the truck.
D) The truck exerts a force on feh cyclist, but the cyclist exert no force onto the truck.

18) A boy throws a rock with an initial velocity of 2.93 m/s at 30.0 degrees above the horizontal. How long does it take for the rock to reach the maximum height of its trajectory?
A) 0.149s
B) 0.413s
C) 0.293s
D) 0.264s

Explanation / Answer

15)moves along a straight-line path
16)D) 9.46x 10^15 mi
17B) The truck exerts a smaller amount of force on the cyclist than the cyclist exerts on the truck
18)C) 0.293s

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