18. A scale in the elevator's floor measures the weight of the passengers, and it has the correct value when the elevator is not moving. The combined mass of the passengers is 572 kg. Part d) says that the elevator is moving up at a constant speed of 3.2 m's. What is the acceleration of the elevator for this part? (Consider up to be positive. This is not the whole problem for part d) – it is only about acceleration.) Your answer: O -6.6 m/s? O 3.2 m/s? O O m/s? O 3.2 m/s?

Commander Shepard, an N7 spectre for Earth, weighs 742 N on the Earth's surface. When she lands on Noveria, a distant planet in our galaxy, she weighs 385 N. What is the acceleration of gravity on Noveria in m/s ? Round to one decimal place. (hint: first find her mass!) wwwww

A 25-kg whippet dog accelerates at a constant 9.1 m/s2. What distance (in m) is required for it to accelerate from 1.1 m/s to 15.9 m/s? Enter the numerical part of your answer, rounded to two significant figures.

A stack of two crates is being accelerated upwards by two cables. The cables are directly attached to crate 1 and the tension in each cable is 3248 N. You may assume that the masses of the cables are negligible compared to the masses of the crates. The acceleration of the crates is? bottom crate crate 1 is 109 kg. the top crate is 248 kg.

A person pushes block A (mass 3 kg) with a constant force of 10 N. Both blocks accelerate together at 2.31 m/s2 on a friction-less surface. What is the normal force that block B exerts on block A? Round your answer to two decimal points.

A 2100 kg truck has put its front bumper against the rear bumper of a 2400 kg SUV to give it a push. With the engine at full power and good tires on good pavement, the maximum forward force on the truck is 18,000 N. What is the maximum possible acceleration the truck can give the SUV? At this acceleration, what is the force of the SUV's bumper on the truck's bumper?

The hover puck has a mass of 1233 g, photogate 1 is at the 20-cm mark, photogate 2 is at the 70-cm mark, and the hanging weight is 40 g. What is the accepted value of the acceleration of the hover puck? Use g = 980 cm/s². Round your answer in the newrest whole number.

A 62-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 827 N. What is the acceleration of the elevator? m/s² upward

Two forces are applied to a 4.0 kg cart on a rough surface as shown. At a certain instant, force A is 32 N to the right, and force B is 20 N to the left. The friction force is 2.0 N. What is the acceleration of the cart at this instant, in m/s?? (Hint: What is the direction of the friction in this case? Draw a free-body diagram.) Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

Bob pushes on a frictionless cart of mass 6.8 kg and the cart has an acceleration of 5.7 m/s2. If Bob now pushes twice as hard on a cart with twice the mass, what will be the acceleration of the heavier cart? Your Answer: Answer