Question

a 4.0x 10^3 watt motor applies a force of 8.0 x 10^2 newtons to move a boat at constant speed. ow far does the boat move in 16 seconds

Answer 1

Answer:

80 m

Explanation:

From the question,

Power(P) = Force(F) × Velocity (V)

P = FV..................... Equation 1

V = P/F.................... Equation 2

Given: P = 4.0×10³ W, F = 8.0×10² N.

Substitute into equation 2

V = 4.0×10³/(8.0×10²)

V = 5 m/s.

Applying,

S = Vt............................ Equation 3

Where S = distance move by the boat, t = time.

Given: t = 16 s, V = 5 m/s

Substitute into equation 3

s = 16(5)

s = 80 m.

Hence the distance moved by the boat is 80 m