Answer:
c. 716, 800 J
Explanation:
t = Time taken
u = Initial velocity = 32 m/s
v = Final velocity = 0
s = Displacement = 60 m
a = Acceleration
m = Mass of car = 1400 kg
Work done is given by
The amount of work done to stop the car is 716800 J
Suppose a grower sprays (8.2x10^1) kg of water at 0 °C onto a fruit tree of mass 180 kg. How much heat is released by the water
1 answer:
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Answer:
-10 N, not balanced
Explanation:
Force is a vector quantity, so in order to find the net force on an object, we must use vector addition rule.
This means that if two forces acting on an object along the same line, we have to choose one direction as positive, and write the two forces with the correct sign.
In this problem, we have two forces acting along a line on the car:
- A first force of
- A second force of
Therefore, the net force on the car is:
Moreover, the net force on an object is said to be "balanced" if it is zero: in this case, it is not zero, so it is not balanced.