Mechanics | Relativity Answers

A ring of mass 3 kg and a block of mass 4 kg are in equilibrium. The string is light and pulley P does not offer any friction. The minimum coefficient of friction between pole and ring.

A person weighing 200 lbs on a motorcycle going 65 mph hitting a car head on and being ejected ???

1. Would be ejected how
many feet forward ?
2. What would that be
equivalent to dropping
how many
stories of a building?

A particle is projected vertically upwards from a point O with initial speed 12.5m/s.at the same instant another particle is released from rest at a point 10m vertically above O.find the height above O at which the particles meet.(Takeg=10m/s^2).

A race car starts from rest and accelerates at a constant rate and reaches a speed of 160kmh-¹ in 6.0seconds. It continues at this speed for another 5 seconds. What is the car’s average speed during the first 11 seconds?

From a building of height h = 16.5 m, you throw a ball of mass of m = 335g downwards with an initial speed vi = 5.7 m/s. What is the final speed vf that the ball is traveling when it hits the ground?

A 56-kg rider on a slingshot ride gets launched from the rest to a final velocity of 13 m/s in a time of 1.4 seconds. What is the force that acts on the rider?

A 64-kg person riding on a roller coaster starts at rest and reaches a final speed of 26 m/s at the bottom of its first hill. What is the roller coaster’s height?

An amusement ride performs 1750 J of work moving a rider over a distance of 4.5 meters. What was the force acting in the rider?

A free-fall ride takes 2.35 s. to fall from it’s maximum height. How tall is the ride?

A roller coaster car changes velocity from 2.5 m/s to 13.3 m/s as it rolls down a hill for 3 seconds. What is the car’s acceleration?