A car accelerates at 4 m/s2 for 5 seconds. the direction of its acceleration is due east (east = positive direction). if its initial velocity was 7 m/s, also due east, what is its final velocity? round your answer to the nearest meter per second.

Two people are standing on a 3.12-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of air, like a hovercraft. The two people, the platform and a 3.36-kg ball are all initially at rest. One person throws the 3.

When Emma is feeling sad or stressed, she sleeps with the teddy bear she received as a child. Which defense mechanism is Emma employing?

Minerals form from magma in predictable patterns in a process known as A. Bowen's reaction series. B. intrusion. C. fractional crystallization. D. partial melting.

How do scientists look for black holes in space? Describe what a black hole looks like using one of the different ways of seeing the sky?

Donna is trying to make an electromagnet to pick up old nails around her driveway. Which of these materials would be best to use for the core in order to make the strongest electromagnet to pick up the most nails?

A lorry with a mass of 5000kg accelerates to overtake a caravan on the motorway. Its acceleration is 1.5m/s². What force must the engine be providing? You can ignore the effects of friction and air resistance

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball

Suppose s (t) is the position of an object moving along a line at time t is greater than or equal to 0. What is the average velocity between the times t=a and t=b? What is the instantaneous velocity at t=a?

Estimate how long it would take one person to mow a football field using an ordinary home lawn mower. suppose that the mower moves with a 1-km/h speed, has a 0.5-m width, and a field is 360 ft long and 160 ft wide. 1 m = 3.281 ft.

Badri makes the table below to review the factors that affect the electric force between objects. Which change will correct the error in Badri's table?