(a) constant velocity problem (b) free fall problem

(a) constant velocity problem (b) free fall problem

its hard i need help

(a) increase (b) remain the same (c) decrease

What volume of copper (density 8.96 g/cm3) would be needed to balance a 2.52 cm3 sample of lead (density 11.4 g/cm3) on a two-pan laboratory balance?

What volume of iron (density 7.87 g/cm3) would be required to balance a 1.00 cm3 sample of lead (density 11.4 g/cm3) on a two-pan laboratory balance?

So I have a table, with the range being time at ten second intervals, and a bunch of positions as my domains.

parallel to the incline and the velocity is constant. (Enter the magnitude of the force.)

coefficient of static friction between the floor and the refrigerator is 0.40. What is the least force you could exert on the refrigerator to move it?

If the internal energy of a thermodynamic system is increased by 300J while 75J of expansion work is done, how much heat was transferred and in which direction, to or from the system?

Two blocks, A and B (with mass 45 kg and 125 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic...

spring on the right is stretched 12.5 cm. Each spring has a force constant of 1.23 103 N/m

moving at constant velocity if the magnitude of the force P is reduced to 1.5 N. Find the coefficients of static and kinetic friction between the book and the table.

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 40 cm^3. If the combustion of this mixuture released 950 J of energy, to what volume will the gases...

A student of mass 57.4 kg, starting at rest, slides down a slide 23.2 m long, tilted at an angle of 20.1° with respect to the horizontal. If the coefficient of kinetic friction between the student...

For the reaction 4Fe+3O2==>2FeO3 (change in enthalpy=-1652) A. How much heat is released when 4.00 mol iron is reacted with excess O2? B. How much heat is released...

A car accelerates uniformly from rest to a speed of 5.9 m/s in 8.5 s. Find the distance the car travels during this time

When Maggie applies the brakes of her car, the car slows uniformly from 17.8 m/s to 0.0 m/s in 5.64 s. How many meters before a stop sign must she apply her brakes in order to stop at the sign?

A car enters the freeway with a speed of 6.6 m/s and accelerates uniformly for 4.7 km in 3.8 min. How fast (in m/s) is the car moving after this time?

A motorboat accelerates uniformly from a velocity of 5.8 m/s to the west to a velocity of 3.6 m/s to the west. If its acceleration was 2.1 m/s2 to the east, how far did it travel during the acceleration...

A driver in a car traveling at a speed of 17.8 m/s sees a cat 101 m away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 2 m before the cat?