A balloon at an amusement park has 1500 g of gas l. By what amount will the mass of the balloon decrease if all the gas inside i
1 answer:
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Taking into account the definition of speed, the average speed of the car in the trip is 57.14 .
Speed is a physical magnitude that relates the displacement of an object and the time it takes to make this change in position.
So, the speed can be defined as the amount of space traveled per unit of time with which a body moves and can be calculated using the expression:
Speed has units of , such as
or
.
In this case, you know that:
- displacement= 200 miles
- time= 3.5 hours
Replacing in the definition of speed:
<u><em>speed= 57.14 </em></u>
Finally, the average speed of the car in the trip is 57.14 .
Learn more about velocity:
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Answer:
The man will be able to move the crate.
Explanation:
= Coefficient of static friction between the crate and the floor = 0.2
= Coefficient of static friction between the man's shoes and the floor = 0.4
= Mass of crate = 150 kg
= Mass of man = 85 kg
g = Acceleration due to gravity = 9.81 m/s²
Horizontal force in order to move the crate is given by
Maximum force that the man can apply
Here it can be seen that .
So, the man will be able to move the crate.