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A race car rounds a curve at 56 m/s.

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Question

A race car rounds a curve at 56 m/s. The radius of the curve is 449 m, and the car’s mass is 610 kg. (Assume the car’s speed remains constant. Take the radially inward direction to be positive. Indicate the direction with the sign of your answer.)

(a) What is the car’s (centripetal) acceleration?

 m/s2

(b) What is it in g‘s?

  g

(c) What is the centripetal force acting on the car?

  N

 
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What is the radius of its orbit?

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Question

A centripetal force of 190 N acts on a 1,350-kg satellite moving with a speed of 5,200 m/s in a circular orbit around a planet. What is the radius of its orbit?

  m

 
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What is the object’s mass?

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Question

In an experiment performed in a space station, a force of 34 N causes an object to have an acceleration equal to 8 m/s2. What is the object’s mass?

4.25 kg

can you explain how the answer is 4.25kg?

 
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How fast was the first car moving before the collision?

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Question

A railroad car with a mass of 20,000 kg rolls into a second stationary car with a mass of 40,000 kg. The cars latch together and move off with a speed of 1.2 m/s. How fast was the first car moving before the collision? 

 
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