PHY 130 CC Object Speed & Acceleration & Object Displacement & Friction Worksheet Please answer the following physics questions correctly below is the ques

PHY 130 CC Object Speed & Acceleration & Object Displacement & Friction Worksheet Please answer the following physics questions correctly below is the questions attached NAME:
PHYSISCS 270
Spring 2020-Tame-Home Final
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1.(10 Points) In a shipping company distribution center, an open cart of mass 50.0 kg is
rolling to the left at a speed of 5.00 m/s You can ignore friction between the cart and the
floor. A 15.0-kg package slides down a chute, inclined at 37o from the horizontal and
leaves the end of the chute with a speed of 3 m/s. The package lands in the cart and they roll
off together. If the lower end of the chute is a vertical distance of 4.00 m above the bottom of
the cart, what are (a) the speed of the package just before it lands in the cart and (b) the final
speed of the cart?
2.(10 Points) Two astronauts, of masses 85 Kg and 120 Kg, are initially at rest in outer
space. They push each other apart. What is their total separation after the lighter astronaut
has moved 32.75 m?
3.(10 Points) A 15.0-m uniform ladder weighing 500-N rests against a frictionless
wall. The ladder makes a 60o angle with the horizontal. (a) Find the horizontal and vertical
forces the ground exerts on the base of the ladder when an 800-N firefighter has climbed
4.0 m along the ladder from the bottom. (b) If the ladder is just on the verge of slipping when
the firefighter is 9.0 m from the bottom, what is the coefficient of static friction between the
ladder and ground?
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(10 Points)
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5.(10 Points) Plaskett’s binary system consists of two stars that revolve in a circular
orbit about a center of mass midway between them. This statement implies that the masses of
the two stars are equal. Assume the orbital speed of each star is v = 220 km/s and the orbital
period of each is 14.4 days. Find the mass M of each star. (For comparison, the mass of
our Sun is 1.99 x 1030 kg)
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6.(10 Points) Comet Halley approaches the Sun to within 0.570 AU, and its orbital
period is 75.6 yr. (AU is the symbol for astronomical unit, where 1 AU = 1.50 x 1011 m
is the mean Earth–Sun distance.) How far from the Sun will Halley’s comet travel before it
starts its return journey?
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(10 Points)
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(10 Points)
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(10 Points)
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(10 Points)

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