Mechanics | Relativity Answers

what is the relationship between the horsepower of the participants in this experiment and Watt'a definition of horsepower?

The period, T, of rotational motion is the time required for one complete revolution, or the time for the object to rotate through 2pie rad. Starting with angular displacement = average angular speed•time interval, show that T = 2pie•r/v

A race car has a mass of 833 kg. It accelerates uniformly from rest, and travels 48.9 m in 3.13 s.Find the net force acting on the car.

A race car has a mass of 833 kg. It accelerates uniformly from rest, and travels 48.9 m in 3.13 s.

Find the acceleration of the car.

A 224 kg crate i pushed horizontally with a force of 710N. If the coefficient of friction is .25, calculate the acceleration of the crate.

Question # 4
If an object on a horizontal, frictionless surface is attached to a spring, displaced, and then
released, it will oscillate. If it is displaced 0.120 m from its equilibrium position and released
with zero initial speed, then after 0.800 s its displacement is found to be 0.120 m on the opposite
side, and it has passed the equilibrium position once during this interval.
Find (a) the amplitude; (b) the period; (c) the frequency.

an object weighs 29.4 newton what will be the mass?

An object is placed 4 cm in front of a concave lens of focal length 3 cm. Using the lens equation, find where the image will form and state whether it is a real or virtual image.

Explain how a driver of a moving car hears a siren but
can NOT hear the pitch of the siren changing.

calculate the number of light year in 1 meter ?