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

Question

Let's assume that the car, of mass 1550kg , can reach a speed of 26.8 m/s in 7.1s . What is the average power needed to accomplish this (Given: 1hp=746 Watt) (A) 105 hp (B) 110 hp (C) 1210 hp (D) 1040 hp

Tardigrade Admin · Accepted Answer

P av =( W text Total / text time )=((1/2) mv 2/ text time )=((1/2)(1550)(26.8/7.1) / 746 105 hp

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

$105 h p$

$110 h p$

$1210 h p$

$1040 h p$

$P_{a v} = \frac{W _{Total}}{time} = \frac{\frac{1}{2} m v ^{2}}{time} = \frac{\frac{1}{2} ( 1550 ) ( 26.8}{7.1} /746$
$105 h p$

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

105hp

110hp

1210hp

1040hp