Calculating Power: Work and Time in Physics

The video tutorial explains how to calculate power using the formula: power equals work divided by time. It introduces a triangle method to help understand the relationships between power, work, and time. The tutorial provides four examples: calculating power from work and time, determining time from work and power, and finding work from power and time. Each example is explained with step-by-step calculations and unit conversions. The video concludes with a reminder to be kind.

If 1224 Joules of work is applied for 6 seconds, how much power is produced?

• done of these

• 1218 Watts

• 7344 Watts

• 204 Watts

How much time is needed to produce 1440 Joules of work if 180 Watts of power is applied?

• 8 seconds

• 10 seconds

• 12 seconds

• 15 seconds

What is the result when calculating work as power times time, given 30 Watts of power applied for 200 seconds?

• 170 Joules

• 230 Joules

• 6.7Joules

• 6000 Joules

What is the formula for calculating power?

• Power = Work * Time

• Power = Time / Work

• Power = Work / Time

• Power = Work + Time

In the formula for power, what does the 'work' represent?

• The energy transferred

• The time spent

• The distance covered

• The force applied

What does the triangle mentioned in the video help with?

• Calculating the area of a triangle

• Measuring distances

• Solving for power, work, and time

• Understanding geometric shapes

What unit is used to measure power in the given examples?

• Joules

• Watts

• Seconds

• Joules per second

If John applied 500 Joules of work for 20 seconds, how much power was produced?

• 20 Watts

• 25 Watts

• 10000Watts

• 525 Watts

What does the unit 'Watts' measure?

• Power

• Work

• Time

• Distance

How much power does it take to accelerate a 15 kg object at 2 m/s² over a distance of 10 m in 30 seconds?

Hint find work first W = F X D

• 300 watts

• 9000 watts

• 30 Watts

• 57 watts