Final answer:
To find the mass of a lorry with a momentum of 4600 kg m/s and a velocity of 15 m/s, divide the momentum by the velocity, resulting in a mass of 306.67 kg.
Step-by-step explanation:
To calculate the mass of a lorry with a given momentum and velocity, we can use the formula for momentum (p) which is the product of mass (m) and velocity (v):
p = m × v
Rearranging the formula to solve for mass, we get:
m = p / v
Given the momentum (p) is 4600 kg m/s and the velocity (v) is 15 m/s, we can substitute these values into the formula:
m = 4600 kg m/s / 15 m/s
m = 306.67 kg
Therefore, the mass of the lorry is 306.67 kg.