Which of the following objects has the most kinetic energy?

a car going 60 miles per hour

a spring that is compressed

a rock sitting on the edge of a cliff

a bicycle going 10 miles per hour

A boat is headed with a velocity of 18 meters/second toward the last with respect to the water in the river. if the river is Flowing with the velocity of 2.5 meters/second in the same direction as the boat.

Starting from rest, the boy runs outward in the radial direction from the center of the platform with a constant acceleration of 0.5 m/s2. The platform rotates at a constant rate of 0.2 rad/s. Determine his velocity (magnitude) when t = 3 sec

Juan roller skates with a constant speed of 20km/h. How long will he take to travel a distance of 70 kilometers?

What is the force required to produce a 1.4 Nm torque when applied to a door at a 60.0º angle and 0.40 m from the hinge?

What is the angular speed (in rev/min) of the Earth as it orbits about the Sun?

A rocket, initially at rest on the ground, accelerates straight upward from rest with constant acceleration 58.8 m/s^2. The acceleration period lasts for time 8.00 s until the fuel is exhausted. After that, the rocket is in free fall.

Why are tyres of formula one is different from four wheels drive?

The slope of a velocity versus time graph gives

Which of the following describes subatomic particles? carbon and nitrogen solids, liquids, gases larger than atoms protons, neutrons, and electrons

What is the difference between speed and velocity? A) velocity describes speed with direction. B) there is no difference. C) Velocity describes direction with position. D) Velocity is used in space, while speed is used on earth.