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Question 1 A car is moving at a constant speed of 17.0 m/s around a circular...

Question 1

A car is moving at a constant speed of 17.0 m/s around a circular road with a radius of 34.0 m. Calculate the acceleration of the car. Give your answer with one decimal point.

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Question 2

A 1200.0 kg car is moving with a constant speed of 12.0 m/s around a circular road with a radius of 12.0 m. Calculate the friction. Give your answer with one decimal point.

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Question 3

In a toy, a 0.06 kg ball attached to a spring moves with a constant speed of 3.0 m/s in a horizontal circular path with a radius (the length of the stretched spring) of 0.8 m. The other end of the spring is attached to the center of the circle. It seems that the spring was stretched to 0.15 m. Calculate the spring constant. Give your answer with one decimal point.

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Question 4

A satellite is moving in a circular path 240 km above the Earth's surface. The Earth radius is 6380 km and its mass is 5.98 * 10^24 kg. What is the speed of the satellite in m/s? Round your answer to a whole number (zero decimal point).

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