Answer:
F = 1400 N
Explanation:
It is given that,
Mass of the ball, m = 70 kg
It is moving with an acceleration of 20 m/s². We need to find the force exerted by the ball.
Force is given by the product of mass and acceleration. So,
F = ma
So, the force of 1400 N is exerted by a metal ball.
Answer:
MRCORRECT has answered the question
Explanation:
The Industrial Revolution impacted the environment. The world saw a major increase in population, which, along with an increase in living standards, led to the depletion of natural resources. The use of chemicals and fuel in factories resulted in increased air and waterpollution and an increased use of fossil fuels.
Answer:
Explanation:
mass of top book = 2kg
mass of book under = 3kg
mass of table = 20kg
a) The diagram is in the attached file to this solution
b) Since the objects are at rest, the acceleration of each of the object is zero
c) Force of gravity giving that g = 10 is
for the top book = 2*10 = 20N
for the book under = 3*10 = 30N
for the table = 25*10 = 250N
d) for the top book = 2*10 - 2*10= 0N
for the book under = 3*10 - 3*10 = 0N
for the table = 25*10 - 25*10 = 0N
If it takes 42 minutes to load 3 1/2 trucks, then it takes 42 / 3.5 = 12 minutes to load a single truck. Multiplying the number of minutes per truck by 6.5 yields the time it will take to load. In this case 12 x 6.5 = 78 minutes would be required to load 6 1/2 trucks. The formula for the time taken is t = 12n, where t is the time in minutes and n is the number of trucks.
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