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A metal ball with a mass 3 kg is left to fall from a point A,20m above the ground.The ball moves past B and C.Take thr ground level D as our frame of reference .
Calculate the gravitational potential energy of the ball at A.
What is the acceleration of the bicycle if the velocity is 1.5 m/s in a circular path with the radius of 75 meters?
The ball is tied to a string to whirl it having a radius of 50 cm at a velocity of 1.2 m/s. What will be the acceleration of the ball?
A 20 kg bowling ball would require what force to accelerate down an alleyway at a rate of 3 m/s2
?
A jet flies at a speed of 275 m/s. The pilot fires a missile forward off a mounting at a
speed of 700 m/s relative to the ground. The respective masses of the jet and the
missile are 5 000 kg and 50 kg. Calculate the speed of the jet immediately after the
missile had been fired.
The force of friction between an object and the surface upon which it is sliding is 46N and the coefficient of friction between them is 0.30. What is the weight of the object?
How fast is an object moving if it has a centripetal acceleration of 460.8 m/s
2
460.8 m/s2
and turns around in a circle with a radius of 5 m
5 m
?
An object accelerates 8.2m/s2 when a force of 20.1N is applied to it. What is the mass of the object?
A sports car accelerates in third gear from 48.3 km/h (about 30 mi/h) to 80.5km/h (about 50 mi/h) in 3.70s
A. What is the average acceleration of this car in mi/s?
B. If the car maintained this accelaration, how fast would it be moving one second later?
