A particle moves in a straight line under the influence of a constant force. If
Practice Questions
Q1
A particle moves in a straight line under the influence of a constant force. If the initial kinetic energy is 100 J and the work done by the force is 50 J, what is the final kinetic energy?
50 J
100 J
150 J
200 J
Questions & Step-by-Step Solutions
A particle moves in a straight line under the influence of a constant force. If the initial kinetic energy is 100 J and the work done by the force is 50 J, what is the final kinetic energy?
Step 1: Identify the initial kinetic energy of the particle, which is given as 100 J.
Step 2: Identify the work done by the force on the particle, which is given as 50 J.
Step 3: Use the formula for final kinetic energy, which is: Final kinetic energy = Initial kinetic energy + Work done.
Step 4: Substitute the values into the formula: Final kinetic energy = 100 J + 50 J.
Step 5: Calculate the final kinetic energy: 100 J + 50 J = 150 J.
Work-Energy Theorem – The theorem states that the work done on an object is equal to the change in its kinetic energy.
