Lorry of mass 4000 kg is travelling at a speed of 4.0 m/ s.
A car has a mass of 1000 kg. The kinetic energy of the car is equal to the kinetic energy of the lorry.
What is the speed of the car?Immersive Reader
(1 Point)
8 m/s
4 m/s
16 m/s
2 m/s

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?