Answer:
Explanation:
We shall apply law of conservation of momentum during the collision of ball A and B .
Total momentum before collision of A and B = .35 x 10 = 3.5 kg m/s
Let the velocity of B after collision be v .
Total momentum after collision = .35 x 2 + .35v
According to law of conservation of momentum
.35 x 2 + .35v = 3.5
.35 v = 2.8
v = 8 m /s .
The direction of B will be same as direction of A .
Net force is the sum of all the forces and has direction. A force to the left is always negative and a force to the right is always positive.
<span>The average acceleration of the car is given by:
</span>
<span>
where </span>
<span> is the initial velocity of the car, </span>
<span> is its final velocity and t is the time taken to attain the final speed. The car in the problem starts from rest, therefore its initial velocity is zero: </span>
<span>. The final velocity is </span>
<span>, while the time taken is
</span>
<span>
Therefore, the average acceleration of the car is
</span>
<span>
and the correct answer is C.</span>
Answer: B, Radiation
Explanation: idk just got that out from Mr.Google