Mechanics | Relativity Answers

A force is applied to a 2.6 kg mass and produces 5.9 m/s[sup]2[/sup] acceleration.What acceleration would be produced by
the same force applied to a 14.9 kg mass?

A 43.4 N object is in free fall, What is the magnitude of the net force when
the object encounters 24.4 N of air resistance?

In the absence of a gravitational field, you
could determine the mass of an object (of
unknown composition) by?

Assume the units for the two quantities are
kg and N.
A 1.62 book in space has a weight of 7.36.
What is the value of gravitational field at
that location?

You have 31 kg of lead.
What is the weight? The acceleration of
gravity is 9.8 m/s2 .
Answer in units of N.

A farmer builds a water storage tank 12m above the ground. The water is fed via a 250m long, 125mm pipe to a field for irregation purposes. The pipe has a friction factor of 0.007. Using the K data below, show that the water flow rate (kg/s) in the pipe is approximately 24.25kg/s.
K data
Tank exit 0.5
bend 0.9
valve in pipe 1.0
Assume water density as 1000kg/m3

A boy,pulls a 1.0 kg toy horizontally in a straight line at a constant speed of 20 m/min by exerting a 3.0 N force at an angle of 30 degrees with the horizontal.What is the average power developed by the boy?

How do find
& & & & & & & 1. total distance traveled;
& & & & & & & 2. total displacement'
& & & & & & & 3. net displacement?

A car begins braking at 50 km/h and comes to a complete halt in 10s ; what was the acceleration (in standard units) over this period?

A hot air ballon (with bucket) has a mass of 900 kg. The balloon has a buoyant force upward of 12,000 N and a westward wind force of 500 N. Find the acceleration of the balloon. What is the force of gravity (weight) of the balloon and bucket?

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