00:01
In this question, we have a car that is moving out a slope.
00:05
Okay, so and the slope is 5 degrees.
00:10
Okay.
00:14
And then it's moving at constant speed, 72 kilometers per hour.
00:19
We want to find the power provided by the engine.
00:25
So to solve this problem, we need to use the formula.
00:34
Okay.
00:34
P equals to fv.
00:36
Okay so to use this formula we need to first figure out the force and then the velocity okay first we do the speed or the velocity okay and the speed is 72 kilometers per hour we need to convert into meters per second so we'll be multiplying by a thousand and then you are by 360 zero okay because one kilometer has 1 ,000 is equal to 1 ,000 meters and then one hour is 3 ,600 seconds.
01:09
Okay, when you do this you get 20 meters per second.
01:13
Okay, then to figure out the force.
01:16
So on this free body diagram of the car, on the car, there are few forces.
01:23
We have the weight...