Protons have a positive charge which is indicated by a + sign.
Hence, the answer is C.
Answer:
Explanation:
Given
mass of box 
coefficient of kinetic friction 
coefficient of Static friction 
cart is moving with constant velocity therefore Net Force is zero
Since there is no net acceleration therefore friction force will be zero
mathematically

where 



The scientist is likely to be studying kinematics.
Kinematics is the branch of science, specifically physics, which is concerned with the motion of objects without reference to the forces that induce this motion. An example of kinematics is studying the change in velocity of an object over time or the distance covered by an object in a specified amount of time.
Answer:
The answer is "
"
Explanation:
Given:

Using formula:

= system initial and final linear momentum.
= system original and final linear pace.
= original weight of the car freight.
= car's maximum weight
