1) A 1kW lifting motor lifts a pallet with a piano on it (400kg total) 15m up to a 4th floor apartment window. How long does it take to lift the piano if the motor can use all of its power?​

Aspaceship starting from a resting position accelerates at a constant rate of 9.8 meters per second per second. how far will the spaceship travel if its final speed is 1 percent the speed of light (300,000,000 m/s)? a. 3.1 × 106 m b. 2.94 × 108 m c. 7.8 × 1010 m d. 4.6 × 1013 m