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test2S_F08

# test2S_F08 - LAST NAME STUDENT NR PHYS 1010 6.0 CLASS TEST...

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LAST NAME: STUDENT NR: PHYS 1010 6.0: CLASS TEST 2 Time: 50 minutes; Calculators & formulae provided at the end = only aid; Total = 20 points. 1) A tennis ball is hit at a height of 1.0 m above the ground without spin. The ball leaves the racquet with a speed of 15 m/s with an angle of 10 degrees above the horizontal. The net is 8.0 metres away from the player, and has a height of 1.0 m. Does the ball clear the net? If so, by how much? If not, by how much does it miss? Start your solution with a pictorial representation. 1

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2) A 15,000 kg truck with good brakes is parked on a 20 slope. How big is the friction force on the truck? Start with a pictorial representation and a free-body diagram. 3) A 2.0 kg object initially at rest at the origin is subjected to the time-varying force shown in the figure. What is the object’s velocity at t = 4s? Start with an acceleration versus time graph. 2
4) A bungee spring is hanging from the ceiling. Attaching a 5.0 kg baby to the spring causes it to stretch 40 cm in order to reach equilibrium. Ignore damping due to air drag or internal

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test2S_F08 - LAST NAME STUDENT NR PHYS 1010 6.0 CLASS TEST...

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