Question

A car has initial velocity of 72km h-1. If is accelerated at 2ms-2.calculated the final velocity and distance covered after 3 sec.

Answer 1

Answer:

$v = 26 \: m {s}^{ - 1} .$

Explanation:

$u = 72 \times 1000 \div 3600 = 20 \: m {s}^{ - 1} \\ \\ a = 2 \: m {s}^{ - 2} \\ \\ v = u + at \\ \\ = 20 + 2 \times 3 \\ \\ = 20 + 6 \\ \\ = 26 \: m {s}^{ - 1} .$