a 500 kg car is accelerated from rest by a force of 2000 N for a displacement of 400m. what is the speed of the car at the end of 400 M?

The table shows information about the moons of Mars. Moon Orbital Period (days) Average Distance from Mars (km) Phobos 0.319 9378 Deimos? 23,459 What is the orbital period of Deimos? A. 0.0806 days B. 0.798 days C. 1.26 days D. 1.59 days

How are surface temperature and length of year on a planet related to the planet's distance from the Sun?

Should the pilot drop the bombs before the plane is over the airfield when the plane is over the airfield, or after the plane has passed the airfield? A pilot is flying a mission to drop bombs on an enemy airfield.

A 2.0 newton book falls from the top of a 1.0 meter high table. What is the book's kinetic energy when it hits the floor? (1) 1.0J (2) 2.0J (3) 10J (4) 20J Show calculations

Physical therapists know as you soak tired muscles in a hot tub, the water will cool down as you heat up. If a 67.9 person at 37.1 oC immerses in 50.2 kg of water at 40.5o C, the equilibrium temperature is 38.7 oC.

A substance has a density of 13.5 g/cm3. What is the volume of a 50 g block of this substance?

Select all of the answers that apply. Which statements are true regarding the scientific evidence supporting the big bang theory? Researchers found cosmic microwave background radiation, which is a heat imprint left over from the big bang.

How are magnetic poles and electrical charges similar? A. Their same forces repel each other, and their opposite forces attract each other. B. Their same forces attract each other, and their opposite forces repel each other. C.

As part of his meal, a workman has a cup containing a hot drink. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in the figure. Which sources of energy loss does this action reduce? Tick two boxes.

When energy is transformed, the amount of usable energy?