If a car engine has a power output of 150 kW, how much work can it do in 2 minutes?
Practice Questions
1 question
Q1
If a car engine has a power output of 150 kW, how much work can it do in 2 minutes?
18000 J
9000 J
30000 J
180000 J
Power is the rate of doing work. Work done can be calculated as W = P * t. Here, P = 150 kW = 150000 W and t = 2 minutes = 120 seconds. Thus, W = 150000 W * 120 s = 18000000 J.
Questions & Step-by-step Solutions
1 item
Q
Q: If a car engine has a power output of 150 kW, how much work can it do in 2 minutes?
Solution: Power is the rate of doing work. Work done can be calculated as W = P * t. Here, P = 150 kW = 150000 W and t = 2 minutes = 120 seconds. Thus, W = 150000 W * 120 s = 18000000 J.
Steps: 6
Step 1: Understand that power (P) is the rate at which work (W) is done.
Step 2: Use the formula for work done: W = P * t.
Step 3: Convert the power from kilowatts to watts: 150 kW = 150000 W.
Step 4: Convert the time from minutes to seconds: 2 minutes = 120 seconds.
Step 5: Substitute the values into the formula: W = 150000 W * 120 s.
