1) A bullet is fired horizontally at some height above the ground. At the same t

Question

1)
A bullet is fired horizontally at some height above the ground. At the same time a 2nd bullet is dropped from the same height which bullet hits the ground first, the bullet shot from the gun or the bullet that is dropped

2) If an object travels at constant speed does it have an acceleration? Explain

3) Why does the Earth bulge around the equator? This is not a question about tides but rather has more to do with centripetal forces. Hint: Look at the question 6 above.

4)What provides the centripetal force for a car rounding a corner?

5)A 2,000 kg car is traveling at 30 m/s on a curvy road. l f the car undergoes a centripetal force of 36,000 N as it rounds the curve, what is the radius of curvature of the road?

Explanation / Answer

1) vertical velocity of both is zero initially, so both will hit the ground simultaneously

2) yes if its direction is changing.

4) the friction forces on the tyres of car

5) 36000 = 2000 x (30)2/R => R = 900/18 = 50 m

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