How does an air mattress protect a stunt person landing on the ground after a stunt? It reduces the kinetic energy loss of the (A stunt person. It reduces the momentum change of the (B stunt person. It increases the momentum change of the stunt person. It shortens the stopping time of the D stunt person and increases the force applied during the landing. It lengthens the stopping time of the stunt person and reduces the force applied during the landing. (E

Two boxes of different mass are at rest. If both boxes are acted upon by equal force, which of the following statements is then true? А. If both boxes are pushed for the same amount of time, then both boxes will have the same final kinetic energy. В. If both boxes are pushed the same distance, then the lighter box will have the greater final momentum. If both boxes are pushed the same amount of time, then the lighter box will have the smaller final kinetic energy. C. D. If both boxes are pushed the same amount of time, then the heavier box will have the greater final kinetic energy. Е. If both boxes are pushed the same distance, then both boxes will have the same final kinetic energy.

A 1,500-kg car and a 3,000-kg SUV truck have the same linear momentum. Which of them has more kinetic energy? O a. O b. O C. Od. Both have the same kinetic energy The SUV truck More information is needed to determine which has more kinetic energy. The car

During an ice show a 75.0 kg skater leaps into the air and is caught by an initially stationary 85.0 kg skater. (a) What is their final velocity in meters per second assuming negligible friction and that the 75.0 kg skater's original horizontal velocity was 4.00 m/s? (Enter a number.) m/s (b) How much kinetic energy is lost in joules? (Enter a number.) J

A reckless coyote engineer straps on a pair of ice skates and attaches a rocket capable of producing 5.00 x 10'N of thrust to his back. Together, the coyote and the rocket have a mass of 1.20 x 10 kg. If the coyote starts at rest on level, frictionless ice and bends over such that the rocket thrust is parallel to the ice, what is his final •speed v if the rocket burns for 4.40 s? m/s

Mid-Air Explosion A drone is flying horizontally at a speed of v; when a battery malfunction causes it to explode into 2 pieces. The pieces fall to Earth from a height of h due to gravity (ignore air resistance). Piece #1 has a mass of 1.00kg and lands a horizontal distance of x1 from the explosion spot. Piece #2 has a mass of 2.00kg and lands a horizontal distance of x2 from the explosion spot. 9 Vi 8.12™ h x1 X2 18.7m 10.8m m Х (no answer) 10 Correct Answer: 18.4 Vi h X1 X2 8.12 m S m 10.9m 18.1m Х (no answer) 2 CM Correct Answer: 18.3

00 h x1 X2 18.7m 11.1m m Mid-Air Explosion A drone is flying horizontally at a speed of v¿ when a battery malfunction causes it to explode into 2 pieces. The pieces fall to Earth from a height of h due to gravity (ignore air resistance). Piece #1 has a mass of 1.00kg and lands a horizontal distance of x1 from the explosion spot. Piece #2 has a mass of 2.00kg and lands a horizontal distance of x2 from the explosion spot. 9 Vi 8.52 m S Type your answer... 1 CM 2 10 DI h x1 X2 m 10.7m 18.1m Vi 8.44m S Type your answer...

You push a 175kg box from rest to the right across a rooftop.  It takes you 5 seconds to push the car.  You push with an applied force of 250 N and it experiences a coefficient of friction of 0.1  What acceleration acts on the box? What is the impulse of the box? How far did you push it during that time? What is the work done by the non-conservative forces as the box moves across the rooftop? How fast is the box moving at the end of that time?