Dhy Q1) An object of mass 2kg falls from the height of 5m and
rebounds to a vertal height of 2m calculate the Change in momentum. If the object is in contact floor for 0.2seconds calculate the force experienced by the object
from the floor.

answer: strength i guess

explanation:

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray