Let's assume that the car, of mass 1550 kg, can reach a speed of 26.8 m/s in 7.1 s. What is the average power needed to accomplish this? (Given : 1 hp = 746 Watt)

Options

A. 105 hp
B. 110 hp
C. 1210 hp
D. 1040 hp

Answer

A

Explanation

`P_(av) = (W_("Total"))/("time") = (1/2 mv^2)/("time") = (1/2 (1550)(26.8)^(2))/(7.1)//746`
`=105 hp`.