yh so fraction are hard so bye
To solve this problem we will apply the concepts related to energy conservation. With this we will find the speed before the impact. Through the kinematic equations of linear motion we will find the velocity after the impact.
Since the momentum is given as the product between mass and velocity difference, we will proceed with the velocities found to calculate it.
Part A) Conservation of the energy
Part B) Kinematic equation of linear motion,
Here
v= 0 Because at 1.5m reaches highest point, so v=0
Therefore the velocity after the collision with the floor is 3.7m/s
PART C) Total change of impulse is given as,
Answer:
B.
Explanation:
Causes mutations in DNA.
The signature mutation caused by ultraviolet light is a CC to TT mutation, caused when a CC dimer is mispaired with two adenine bases during replication. Because of these mutations, the connection between ultraviolet damage to DNA and cancer is quite clear.
The water skier being pulled right by boat. Tension acting in the string of magnitude 490 N at an angle of 13°. The weight of the skier, mg would act downwards. ( <em>m</em> = 49 kg , mass of the skier and g = 9.8 m/s² acceleration due to gravity ). The frictional force, <em>f</em> would act in the opposite direction of motion. The normal force (reaction force) would act in the upward direction.
Free body diagram is attached below.