A roller coaster car speed is 4 m/s, but 3 seconds later its speed is 22 m/s. What is its average acceleration?

A 8.0*104kgspaceship is at rest in deep space. Its thrusters provide a force of 1200kN. The spaceship fires its thrusters for 20s, then costs for 12km. How long does it take the spaceship to coast this distance

Can i put stamps on the bottom of a lette

10. Almost three-quarters of household energy use is due to the following: • home furnaces and air conditioners • water heaters • washers and dryers • lighting For each of these uses of energy, give two reasonable ways to reduce household energy

A car rounds a curve while maintaining a constant speed. Is there a net force on the car as it rounds the curve?

How long is a pendulum with a period of 1.0 s on a planet with twice the gravity of the earth? 0.25 m 1.0 m 0.50 m 0.10 m

Why does the closed top of a convertible bulge when the car is riding along a highway? Why does the closed top of a convertible bulge when the car is riding along a highway? The air pressure is greater outside the car than inside.

Is a white shirt cooler or warmer in the sunlight?

A stone is thrown vertically upward with a speed of 18.0. (a) How fast is it moving when it reaches a height of 11.0? (b) How long is required to reach this height? For part A) I did: y=11m, g=9.

What object or class of objects makes up most of the solar systemâs mass?

Carole is very tired and makes coffee. why would newton say that she must use her hand to put up the cup