Force can be expressed as the time-rate change of momentum
Mathematically, Force = Change in momentum/change in time
Change in momentum = m(10.1-18.9) = -0.2024
Force = -2024/5.4 = -375N(approx)
The significance of the '-' sign is that the direction of force is the opposite that of the direction of our velocities since we assumed them to be positive.
Also this is the force on the ball, the force on the window will be equal and opposite.
The Sun light is reflected back by earth. On process of reflecting back the sunlight, the lower layer of troposphere absorbs the most sunlight and upper layer absorbs the least sunlight. So when We ascend to troposphere, we move towards the upper layer of troposphere where sunlight is least absorbed and is colder than lower layer where sunlight is most absorbed
Huh that’s cool! Cuz studying sucks.
Answer:
Explanation:
According to Newton's second law, we have:
The force of friction is opposite to the motion of the block.
Using the following kinematic equation, we can calculate the distance traveled by the block before it stops().
Solving for x and replacing a from (1):
Answer:
Dry luricants
Despite being in a solid phase they are able to reduce friction