Question

A donkey pulls a cart along a road with a constant force of 100 N. A constant force of friction of 50 N acts on the cart. Calculate the mass of the cart if the net force accelerates it at a rate of 10 m/s².

A. 5 kg
B. 10 kg
C. 15 kg
D. 20 kg

Answer 1

To calculate the mass of the cart, use Newton's second law of motion. The mass of the cart is 5 kg.

Step-by-step explanation:

To calculate the mass of the cart, we can use Newton's second law of motion, which states that force is equal to mass multiplied by acceleration. In this case, the net force is the difference between the applied force and the force of friction. The given net force is 100 N - 50 N = 50 N. The acceleration is given as 10 m/s². Rearranging the formula, we have:

50 N = mass × 10 m/s²

Dividing both sides by 10 m/s², we get:

mass = 5 kg

Therefore, the mass of the cart is 5 kg, so the correct answer is A. 5 kg.