Using calipers, you find that a nickel cylinder has length 8.625 cm and diameter

Question

Using calipers, you find that a nickel cylinder has length 8.625 cm and diameter 1.218 cm. An electronic pan balance shows that its mass is 89.52 g. Find the cylinder's density. (4 Sig figs, units)


A motorcycle is following a car that is traveling at constant speed on a straight highway. Initially, the car and the motorcycle are both traveling at the same speed of 41.0 mph, and the distance between them is 50.0 m. After t_1 = 5.00 s, the motorcycle starts to accelerate at a rate of 8.00 m/s^2. The motorcycle catches up with the car at some time t_2.
a. How long does it take from the moment when the motorcycle starts to accelerate until it catches up with the car? In other words, find t_2-t_1. (2sig figs, units)

b. How far does the motorcycle travel from the moment it starts to accelerate (at time t_1) until it catches up with the car (at time t_2) (xm (t2)? (2sig figs, units)

Explanation / Answer

t2 = v[(50/0.50 (8.0)] = 3.53s The time taken to catch the car is 3.53s
The distance between them is 113m

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