Question 3: What was the ball\'s launch angle? Express your answer with the appr

Question

Question 3:

What was the ball's launch angle?

Express your answer with the appropriate units.

I think this answer is 63.4, but I dont know what units to put in for the aswer.

Question 4:

A rifle is aimed horizontally at a target 46.0m away. The bullet hits the target 2.20cm below the aim point.

What was the bullet's flight time?

Express your answer with the appropriate units

What was the bullet's speed as it left the barrel?

Express your answer with the appropriate units.



Question 4:
A boat takes 3.20hours to travel 30.0km down a river, then 5.50hours to return.

How fast is the river flowing? Enter your answer with the appropiate units

Question 5:

email me at michael.shamoun@yahoo.com

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How many revolutions does the object make during the first 3.0s ?
Express your answer using two significant figures

Question 5:
An old-fashioned single-play vinyl record rotates on a turntable at 44.0rpm . What are (a) the angular velocity in rad/s and (b) the period of the motion?

Question 6:

Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 40.0s to speed up from rest to its top speed of 1 rotation every 1.40s . The astronaut is strapped into a seat 7.00m from the axis.

What is the astronaut's tangential acceleration during the first 40.0s ?

Express your answer with the appropriate units.

What is the astronaut's tangential acceleration during the first 40.0s ?

Express your answer with the appropriate units.

What was the ball's launch angle? Express your answer with the appropriate units. I think this answer is 63.4, but I dont know what units to put in for the aswer. Question 4: A rifle is aimed horizontally at a target 46.0m away. The bullet hits the target 2.20cm below the aim point. What was the bullet's flight time? Express your answer with the appropriate units What was the bullet's speed as it left the barrel?

Explanation / Answer

X= V*t Y = 0.5*g*t^2 t = sqrt(2*Y/g) = 0.67s V = X/t = 687m/s

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