Answer:
Explanation:
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The correct option is <u><em>(d) Velocity of a moving body is its speed in a given direction.</em></u>
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Yes. Organisms do work together to make another level of organization. They work together to make organ systems.
C. The range of a projectile increases with an increase in the angle of launch.
The correct answer would be C. it moves at a constant speed. The troposphere(the layer our weather is in) is not nearly high enough for gravity to be different at different altitudes.
Answer:
External force on him will be 112 N
Explanation:
We have given the mass of the sprinter m =70 kg
Acceleration of the sprinter 
We have to find the net external force
According to second law of motion force = mass ×acceleration
Force is dependent on the mass and acceleration
So 
So external force will be 112 N