An object is initially moving at an unknown velocity. It accelerates at a rate of 2.0 m/s2 to a new velocity of 45 m/s in 10s. What was the initial velocity?

The mechanical engery of an object equals its

4. Which model best describes the particles of a solid and their motion? O bricks cemented together in a wall O beads moving around in a rattle O people seated in an auditorium O students walking through a crowded hall

Two sacks contain the same number of identical apples and are separated by a distance r. The two sacks exert a gravitational force on each other that is opposite in direction but with the same magnitude, F.

The amount of energy needed to raise the temperature of a sample 1°C is called a. Heat capacity b. Specific heat capacity c. Calorie

Two pulleys, one with radius 2 inches and one with radius 9 inches , are connected by a belt. If the 2-inch pulley is caused to rotate at 5 revolutions per minute , determine the revolutions per minute of the 9 dash inch pulley.

A British newspaper was interested in whether groups of people who differed in social standing were treated differently when they complained to organizations about poor service they had received.

During combustion, a fuel's electromagnetic energy is converted into thermal energy.

Explain why glucose is important to a cell

4. How far does a car travel in 90 seconds if it is traveling at a speed of 55 m/s?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?