Mechanics | Relativity Answers

the oscillation of two points X1and X2 at X=0 and X=1m respectively are modelled as follows : Y1=0.2 sin 3πt and Y2= 0.2 sin (3πt+ 8π) calculate the wavelength and speed of the associate wave

A person standing on a 20 m high building throws ball up in the air with a velocity of 14 m per 2nd period he goes to a maximum high and falls to the ground. How long does it take for the ball to reach maximum height? What is the balls maxim height? What is the ball's final velocity before hitting the ground

A body starts from rest and accelerates uniformly at a rate of 5m/s2. calculate its velocity after 90m

A machine lifts a 40kg mass to a height of 6,000cm in 3s.calculate the power developed by the machine
(Take g=10m/s2

A ball of mass 350g is kicked with a speed of 70 m/s. What is kinetic energy?

ow high should a 3kg mass be lifted from the ground if it is thrown upward at a speed of 25m/s
(Take g=10m/s?

Newton’s third law states that every action has equal and opptosite reaction. If this is true then how can we move any object? How can we stop any object? Logical answer according to the rules with one example please. Thanks

A body starts from rest and accelerates uniformly at a rate of 5m/s2. Calculate its velocity after 90m

I am a safety supervisor for an oil company. I need to know what is the force generated by an unsecured 300lb drum of oil traveling at 30mph if the truck stops suddenly. I am trying to instruct drivers about securing their loads and what can happen if they don't secure the load. For example: The 300lb drum would generate an impact force = to 1500lbs if the truck was traveling at 30 mph??? What about 50mph??? 2500 lbs of force????
Can you help me with these calculations?

Thanks,

Steve

The New York Ferry (m = 13000.0 kg loaded) is travelling at 11 m/s when the engines are put in reverse. The engine produces a force of 1.0 x 106 N for a period of 20.0 seconds.