a How far will the ball roll in one second b How far will the ball roll in two

# A how far will the ball roll in one second b how far

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a)How far will the ball roll in one second? b)How far will the ball roll in two seconds? c)How far will the ball roll in three seconds? d)What is the ball’s acceleration? 3)A ball is placed at rest at the top of a hill. The ball immediately begins rolling forward with an acceleration of 3.0 m/s2. a)How far will the ball roll in one second? b)How far will the ball roll in two seconds? c)How far will the ball roll in three seconds? d)Compare your answer here with the previous problem. Why did this ball go a shorter distance in one second, but farther in three? 4)Roy is sitting at a red light. He pushes the gas pedal and in 6 seconds has traveled 75 meters. What velocity does he reach? ☺ 5)How far will a car travel if it accelerates from rest to 15 m/s at a rate of 3.2 m/s2? 6)A car driving at 30 m/s stops in 6 seconds. a)What is the car’s acceleration? b)What is the car’s velocity after 3 seconds? c)How far does the car go in the first three seconds? d)How far does the car go in the last three seconds? A drawing might help if you’re stuck!!!! 7)A ball is rolled up a hill at 14 m/s. The hill causes the ball to accelerate at 3.2 m/s2and since the ball is not moving fast enough to get to the top, it eventually rolls back down. a)Find the ball’s velocity after 8 seconds. b)How high up the ramp does the ball make it before it stops and rolls back down? A drawing might help!! 8)Roy is fired out of a cannon straight up into the air with an initial velocity of 47 m/s. a)How high will he go? b)When does he reach the top of his path? c)What is his velocity after 6.2 seconds? d)How high up is he after 6.2 seconds? e)How high up is he after 3.4 seconds? f)Why are your answers to d and e the same? ☺ g)How high up is he when he is coming down at 23 m/s? h)Roy falls straight back down into the cannon. What will his velocity be as he falls back into the cannon? ☺ 9)An object is dropped from rest. How long will it take to fall a)4.9 m? b)9.8 m? c)19.6 m? d)39.2 m? e)78.4 m? f)What is the point? There is a reason I had you do so many of these…. g)Make a position-time graph. ☺ Assume the starting position is zero. 10)An object is dropped from rest. How far does it fall during a)the 1st second? (Note…it’s not 9.8 m!) b)the first 2 seconds? c)the first 3 seconds? d)the first 4 seconds? 11)A ball is dropped from a cliff which is 67 m tall. Find its velocity as it hits the ground.

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• Fall '16
• Meg Tredinnick
• Physics, pH, Velocity, Roy