* KE stands for Kinetic Energy, which is the energy an object possesses due to its motion. It's measured in Joules (J).
* Velocity is the rate of change of displacement, meaning how fast an object is moving in a specific direction. It's measured in meters per second (m/s).
The problem: You've provided a velocity of 10 "s". This isn't a standard unit for velocity. It's likely a typo.
To find the mass of the truck, you need to use the following formula:
KE = 1/2 * m * v²
Where:
* KE is the kinetic energy (in Joules)
* m is the mass (in kilograms)
* v is the velocity (in meters per second)
Here's how to solve it:
1. Assume the velocity is 10 m/s (since 10s doesn't make sense as a velocity unit).
2. Rearrange the formula to solve for mass (m):
m = 2 * KE / v²
3. Plug in the values:
m = 2 * 4250 J / (10 m/s)²
4. Calculate the mass:
m = 8500 J / 100 m²/s²
m = 85 kg
Therefore, if the truck's velocity is 10 m/s and its kinetic energy is 4250 J, its mass is 85 kg.
