A force of 297.0 N is used to push a 165 kg mass 30.0 m horizontally in 3.00 s.

(a) Calculate the work done on the mass.
Enter a number.1 kJ
(b) Calculate the power developed.
Enter a number.2 kW

To calculate the work done on the mass, you can use the formula:

Work (W) = Force (F) × Distance (d) × cos(theta)

In this case, the force applied is 297.0 N, the distance is 30.0 m, and since the force is applied horizontally, the angle between the force and displacement is 0 degrees.

So, using the formula:
W = 297.0 N × 30.0 m × cos(0)

The cosine of 0 degrees is 1, so the equation simplifies to:

W = 297.0 N × 30.0 m × 1 = 8910 J

Therefore, the work done on the mass is 8910 J.

To calculate power, you can use the formula:

Power (P) = Work (W) ÷ Time (t)

In this case, the work done is 8910 J and the time taken is 3.00 s.

So, using the formula:
P = 8910 J ÷ 3.00 s

P = 2970 W

To convert watts to kilowatts, simply divide the value by 1000:

P = 2970 W ÷ 1000 = 2.97 kW

Therefore, the power developed is 2.97 kW.

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