A force is always needed to slow an object down.

A True

B false

A truck on a straight road starts from rest, accelerating at 2.00 m/s2 until it reaches a speed of 28.0 m/s. Then the truck travels for 46.0 s at constant speed until the brakes are applied, stopping the truck in a uniform manner in an additional 5.

A vehicle moving at an average speed of 50.0 km/h travels 62 km. How many minutes does this trip take

Imagine that a new planet is discovered with two moons of equal mass, moon A and moon B. The mass of the new planet is greater than the combined mass of its moons. Moon A is farther away from the new planet than moon B.

Mike has a mass of 97 kg. He jumps out of a perfectly good airplane that is 2000 m above the ground. After he falls 1000 m, when his downward speed is 68 m/s, Mike opens his parachute. The positive y-direction is downward.

Why didn't early Portuguese and Dutch explorers decide to create settlements in Australia?

You push a shopping cart filled with groceries (total mass = 20 kg) by applying a force to the cart 30° from the horizontal. If the force you apply has a magnitude of 86 N, what is the cart's acceleration? Assume negligible friction.

Does water expand more as the temperature drops even more below 0 deg? I am worried about the coolant in my rad. as the temp. is 40deg below.

A 1.00-kilogram ball is dropped from the top of a building. just before striking the ground, the ball's speed is 12.0 meters per second.

Why oil does not dissolve in water?

Which element has the highest number of protons? a. Calcium b. Argon c. Xenon d. Radon