Question

A 4.75 • 105-kg rocket is accelerating straight up. Its engines produce 1.5 • 107 N of thrust, and air resistance is 4.7 • 106 N . find acceleration?

Answer 1

F = m*a

a = F /m

Where:

F= sum of forces

m = mass

a= acceleration

Sum of forces = thrust of the rocket - air resistance = 1.5 x 10^7 N - 4.7x10^6 N = 10,300,000 = 1.03 x 10^7 N

A = 1.03 x 10^7 / 4.75 x 10^5

A = 21.68 m/s^2