Author Question: The kinetic energy of a proton is 80 of its total energy. What is the momentum in kgm/s of the ... (Read 175 times)

charchew · **on:** Jul 29, 2018

The kinetic energy of a proton is 80 of its total energy. What is the momentum in kgm/s of the proton?

A)

5.0 10-19 kgm/s
B)

2.5 10-19 kgm/s
C)

5.0 10-18 kgm/s
D)

2.5 10-18 kgm/s
E)

1.5 10-19 kgm/s

Question 2

A 1500-kg car accelerates from 0 to 25 m/s in 7.0 s. What is the average power delivered by the engine? (1 hp = 746 W)

A)

50 hp

B)

60 hp

C)

70 hp

D)

80 hp

E)

90 hp