Classical Mechanics Answers

A wagon has a mass of 20 kg and is pulled at an angle of 16 degrees from the horizontal by a motor with a force of 100 N. Because of this force, the wagon is moving at a constant, horizontal speed of 5.0 m every two seconds. What is the power output of the motor pulling the wagon?

A 4 kg block is attached to a vertical spring with a spring constant 800 N/m. The spring stretches 5 cm down. How much elastic potential energy is stored in the spring?

A spring has a spring constant of 1000N/m. It is compressed by 15cm, then launches a 200g block on a frictionless horizontal surface, it then reaches a 30 DEGREE incline and the blocks coefficient of kinetic friction on incline is 0,20.

What distance 'd' does the block sail through the air?

Please assist.

{ ___d__}
/
[ ] ____/

some type of representation.

Calculate the Velocity when time is 1.5seconds, the Velocity equation is V=30m/s+(25m/s³)t²

how to find the amplitude of y = 0.8/[(4x+5t)^2+5]

To bring 1.0kg of water from 25oC to 99oC takes how much heat input?

If a ball is falling vertically downwards and another ball is rolling down from an inclined plane (friction and air drag are absent)at the same time and from same height. Then which ball will reach to the ground first and why? (ASSUMING initial velocities of both balls are zero)

A person pulls a box along the ground at a constant speed. If we consider Earth and the box as our system, what can we say about the net external force on the system?

A person pulls a box along the ground at a constant speed. If we consider Earth and the box as our system, what can we say about the net external force on the system?

Pam is playing football and is about to take a penalty. She kicks the ball at an angle of 60°
and with initial velocity 18.5 m/s.
a) What is the maximum height the ball will reach?
b) If she is 30 metres from the goal will the ball enter the goal?