The velocity of a toy car of mass 2kg increased from 5m/s to 10m/s in 2 seconds.what force was exerted on the car?
f=ma=m(10-5)/2=5N
2.5N
To determine the force exerted on the car, we can use Newton's second law, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration.
The acceleration of the car can be calculated using the formula:
acceleration = (final velocity - initial velocity) / time
Given:
Mass (m) = 2 kg
Initial velocity (u) = 5 m/s
Final velocity (v) = 10 m/s
Time (t) = 2 seconds
First, let's calculate the acceleration:
acceleration = (10 m/s - 5 m/s) / 2 s
acceleration = 5 m/s / 2 s
acceleration = 2.5 m/s²
Now that we have the acceleration, we can use Newton's second law to find the force:
force = mass * acceleration
force = 2 kg * 2.5 m/s²
force = 5 N
Therefore, the force exerted on the car is 5 Newtons.