A train moves at a constant velocity of 50 km/h. How far will it move in 0.5 h? A. 10 km
B. 45 km
C.25 km
D. 20 km

C. 25 km

Explanation:

The train moves 50 kilometers in 1 hour.

In 0.5 hours, the train will travel 50(0.5) = 25 kilometers.

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.