Two rockets with the same mass are accelerated. Rocket A accelerates twice as quickly as rocket B. which statement is correct? The motor in rocket A is twice as powerful as the motor in rocket B.

The motor in rocket A is four times as powerful as the motor in rocket B.

The motor in rocket A is half as powerful as the motor in rocket B.

The motor in rocket A is half as powerful as the motor in rocket B.

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?