Question

Starting from rest, a dragster travels a straight racetrack in 6.70 s with acceleration of 8.3 m/s². What is its final velocity?

a) 0 m/s
b) 8.3 m/s
c) 16.6 m/s
d) 49.61 m/s

Answer 1

The final velocity of the dragster is 55.61 m/s.

Step-by-step explanation:

To find the final velocity of the dragster, we can use the equation:

v = u + at

where v is the final velocity, u is the initial velocity (which is 0 in this case since the dragster starts from rest), a is the acceleration, and t is the time.

Plugging in the given values, we have:

v = 0 + (8.3 m/s²)(6.70 s)

v = 55.61 m/s

Therefore, the final velocity of the dragster is 55.61 m/s. The correct answer is option d) 49.61 m/s.