Mechanics | Relativity Answers

A truck is moving with a velocity of 20m/s. The mass of truck is 100Kg.An apple of mass 0.2Kg is moving with a velocity of 5m/s. The apple falls on the trolley. What is the final velocity of apple-truck together?

water is dropping on ground drop wise. if 1st drop is dropped on ground while 3rd drop is near to fallб the distance between 3rd and 1st drop is 5 meters. Find distance between 2nd and 1st drop.

The earth rotates ONCE in about 24 hour. Calculate its rotation frequency and its angular frequency.

what is the direction of friction on front and rear tyre of bicycle while driving it

while walking on ice one should take smaller steps to avoid slipping
this is because

it is represented by the slope of the graph when velocity or speed is plotted against time

A ferryboat traveling at a speed of 30 km/h attempts to cross a river with a current of 5 km/h. What is the boat's speed relative to the shore?

Please convert 1100 kPa into kg/m*s^2 and kg/km*s^2

also this question:

At 45degree latitude, grativational acceleration as a function of of elevation z above sea level is given by g = a - bz where a = 9.807 m/s^2 and b = 3.32 E -6 s^-2. Determine the height above sea level (z) where the weight of an object will decrease by 0.4%.
z = __________ m

A rectangular block of plastic, measuring 2.27 cm by 2.43 cm by 2.11 cm, floats in the middle of the Pacific Ocean. The volume of sea water displaced by the plastic block is 8.24 cm3. Assuming the density of the sea water is 1.025 g/mL, what is the density of the plastic?

what is the tangential velocity of a point on the equator of Mercury which has a rotation period of 59 days and an equatorial radius of 2500km?