Physics Answers

Find the center of mass of four 2kg bodies placed at each corner of a square of side 1.5m. (identify the given, unknown and equation to use)

A raindrop with a diameter of 5 mm falls in calm air towards the ground

at a speed of 12.1 m / s. How far would a drop travel in a minute?

A car starting from rest accelerates uniformly and attains a speed of 80m/s in 30s. It maintains this steady speed for another 30s. Then slows down uniformly until it comes to rest in the next 40s. What is the total distance covered?

If he couldn't perspire or otherwise cool his body, by how much would his body temperature rise during this exercise?

The foothaller kicked the ball and it was caught by the opposing goalkeeper, 4 metres above theground. The ball was travelling at 10 m/s.

(i) Calculate the potential energy of the ball just before it was caught.

The foothaller kicked the ball and it was caught by the opposing goalkeeper, 4 metres above theground. The ball was travelling at 10 m/s Calculate the kinetic energy of the ball just before it was caught.

A 0,25kg volleyball is thrown horizontally at 2 m,s-1 west. It strikes a 0,62kg stationery basketball. The volleyball rebounds eat at 0,79. Calculate the velocity of the basketball immediately after the collision?

A 1050 kg car has a velocity of 2,65 north.The car guys the rear of a stationary truck,and the bumpers lock together.The velocity of the car truck system immediately after the collision is 0,78 north.Calculate the mass of the truck

A bird flying due north with a velocity at 15m/s shed a feather in air current flowing at 20m/s due east. Find the resultant and direction of the feather.

Debye temperature of diamond is 2000k determine the mean velocity of diamond if the interatomic spacing is 1.45A. estimate the mode of a lattice vibration