Mechanics | Relativity Answers

A 75 kg box slides down a 25.0 degrees ramp with an acceleration of 3.60 m/s/s.find the coefficient of kinetic friction between the box and ramp

An engineer weighs a sample of mercury (p=13.6 x 10^3 kg/m^3) and finds that the weight of the sample is 4.6 N.
What is the sample's volume? The acceleration of gravity is 9.81 m/s^2.
Answer is units of m^3.

A horizontal force 39ˍN is used to help push an 31ˍkg box up a 13ˍm incline with
angle 23°, as shown. What is the work done by this applied force? What is the work done by gravity?

A 30 kg block on a frictionless surface experiences two perpendicular forces in the x and y directions. If the force in the x direction is 60 N, and the force in the y direction is 150 N, find the acceleration in the x-direction, the y-direction, and the net resultant acceleration.

A 980 kg car traveling at 20 m/s rounds a curve of radius 40 m. What is the friction force that must act on the car to keep it in its circular path?

A person walks 39 m East and then walks
34 m at an angle 31 North of East.
What is the magnitude of the total dis-
placement?
Answer in units of m

A tow rope is used to pull a 1750-kg car, giving it an acceleration of 1.35 m/s^2. What force does the rope exert?

A car is traveling lat 50 km/h on a level road where the coefficent of static friction between its tires and the road is 0.70
Find minimum turning radius of the car

a mango fruit droped to the ground from the tip of its tree which is 5m high. how long does it take toreach the ground?

A ball is thrown on a projectile path with an initial vertical velocity of 30 m/s. If the ball lands 90 m away, find the initial horizontal velocity.