Mechanics | Relativity Answers

A car travels 540 km in 4.5 hours. How far will it go in 8 hours at the same average speed?

The gravity on the moon is 1.63 m/s^2. If a ball with a mass of 5 grams is dropped on the moon from a height of 1.5m . Determine the time for the ball to fall on the surface of the moon

A cannon shoots a projectile horizontally (x) at 50 m/s from the top of a 70 m tall cliff

a. How much time does it take the projectile to reach the ground?

b. What is the range (dx) of the projectile?

What is projectile? Show that path of the projectile is parabolic nature when it is projected from ground. Prove that the maximum horizontal range is four times the maximum height attained by a projectile which is fired along the required oblique direction.

A man is running due north at 2m/s turns east and runs at the same speed. What is the change in velocity?

In this circuit, the voltage drop across the upper resistor is 4.5 V. What is the battery voltage? what s the current through the circuit? what is the resistance in the circuit?

The figure shows a rectangular circuit with a battery and two resistors connected in series. The battery is located on the left-hand segment of the circuit, a 30-ohm resistor is located on the upper segment, and a 50-ohm resistor is located on the right-hand segment of the circuit.

1. what is the equivalent resistance of this circuit?

(250 ohms, 150 ohms, and 50 ohms are their in parallel)

for low speed ( laminar) flow through a circular pipe, the velocity distribution takes the form v=(beta/

A gymnast of mass 52.0 kg is jumping on a trampoline. She jumps so that her feet reach a maximum height of 2.81 m above the trampoline and, when she lands, her feet stretch the trampoline 67.0 cm down. How far does the trampoline stretch when she stands on it at rest? Assume that the trampoline is described by Hooke's law when it stretched.