Two identical spaceships are travelling through deep, empty space and are not experiencing any forces from their surroundings. Their velocities are both constant, but one ship is moving twice as fast as the other. Each ship has a large rocket engine that can be used to push it forward. From this information, it's clear that
A. both ships have their engines shut off.
B. the fast ship's engine is pushing forward twice as hard as the slow ship's engine.
C. both ships' engines are pushing forward equally hard.
D. the fast ship's engine is pushing forward four times as hard as the slow ship's engine.
Answer:A
Two identical spaceships are travelling through deep, empty space and are not experiencing any forces from their surroundings. Their velocities are both constant, but one ship is moving twice as fast as the other. Each ship has a large rocket engine that can be used to push it forward. From this information, it's clear that
A. both ships have their engines shut off. B. the fast ship's engine is pushing forward twice as hard as the slow ship's engine. C. both ships' engines are pushing forward equally hard. D. the fast ship's engine is pushing forward four times as hard as the slow ship's engine.