The force of gravity A) is an attractive force only B) is a repulsive force only C) can be an attractive or repulsive force D) is neither an attractive or a repulsive force
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- A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car. During the collision × the force that the truck exerts on the car is much greater than the force that the car exerts on the truck the car and the truck have the same magnitude acceleration. the force that the car exerts on the truck is slightly greater than the force that the truck exerts on the car the force that the car exerts on the truck is exactly equal to the force that the truck exerts on the carYour physics book is at rest on a table as shown. What is the Newton's 3rd law pair with the Normal Force on the book by the table? Normal Force on the earth by the book Normal Force on the table by the book Weight Force on the book by the earth Weight Force on the table by the earth Friction Force on the book by the table Weight Force on the book by the earth Friction Force on the table by the book Normal Force on the book by the earthA block having a mass of m = 19.5 kg is suspended via two cables as shown in the figure. The angles shown in the figure are as follows: α = 15° and β = 28°. Solve for the numeric value of T1 in newtons. Solve for the numeric value of T2 in newtons
- Static equilibrium means what about the movement Group of answer choices The net force can be equal to a number The object has to be stationary The net force does not influence static situations The object has no acceleration must pick one answer onlyWhich one of the following forces is non-conservative? O The electric force The Elastic force O The gravitational force O Air resistanceRock Climber Sliding Down a Smooth Slab 9.6 m Hk =0.72 %3D 56° Consider the rock climber climbing on a smooth slab, as shown above: the coefficient of kinetic friction between the climber's rock shoes and the rock is 0.72 the belayer cannot see the climber who is out of sight beyond the edge of the slab the belayer cannot hear the climber because the wind is blowing very hard The climber loses his footing and slides down the slab from rest. How long after the climber loses his footing does the belayer realize she needs to catch the climber's fall? [answer: about 2.1 s] FNET = ma W = mg g = 9.81 m/s? Ax = vot + ½ at?
- Throwing can be divided into three main aspects one of which is Question 1 options: electric charge pressure angle of trajectory static frictionThe Earth pulls downward on a pingpong ball with a force of 1N. If this is the "action" force, what is the "reaction" force? answer choices The ground exerts a force of 1N on the ping pong ball The ping pong ball exerts a force of 1 N on the Earth The ping pong ball pushes down on the earth with a force of 1N The is no reaction force when a gravitational force is involvedA 35-N crate slides down a frictionless incline that is 25° above the horizontal. The magnitude of the normal force of the incline on the crate is closest to O 11 N 23 N O 32 N non eof the above