Mechanics | Relativity Answers

Estimate the soccer ball‘s speed immediately after being kicked off if its mass is 0.5Kg as shown in the given figure. F . . . F=250N ∆x= 0.20m F= 256N V= ?
Expert's answer

The force of air resistance on a raindrop is
5.8 × 10−5 N when it falls with a terminal
velocity of 5.7 m/s.
The acceleration of gravity is 9.8 m/s
2
.
What is the mass of the raindrop?

A gun fires a 0.25 kg projectile which acquires a velocity of 300 m/s. If the projectile takes 0.0050 seconds to travel the length of the barrel, what is the force exerted by the gun on the projectile? (Use impulse-momentum theorem

Suppose that you & ur friend are inertial observers suppose that two events A 'B are simultaneously in your own frame draw two spacetime diagrams in your frame include Ur friends worldline in both for the first arrange the relative velocity of u & your friend so that event a a occurs before event b e in your friends frame for II arrange it so that event b e e occurs first in your friends frame in both cases include one of your friends lines of simultaneously on the diagram

, if an object has constant acceleration, it has a constant velocity? Either yes or no explicate it with example.

A faulty car causing obstruction at the center of a road. And when a force of 1,500N was applied to push it to a near by mechanic workshop the work done was 10,000J. How far away was the mechanic workshop.

Find the energy of a mosquitoes weighing 0.01g are flying at a speed of 0.5m/s

A girl lifts a load of 100N through a vertical height of 1.5m, before putting it on her head she suddenly finds out that the load is very heavy on her to carry and ahead quickly places the loads in its former position. What is the magnitude of work done by the girl.

A bullet of mass 0.5kg has a speed of 400m/s at what energy does it more? If hits the wall of which the average resistance force is 10,000N. Calculate the distance penetrated by the bullet.

A man wants to know the velocity of current flow at pasig river. He used a motor boat with a known speed of 400 meter/minute. He clocked 5 minutes downstream and clocked 7 minutes upstream. Determine the distance covered. Determine the current flow.