: Chất điểm chuyển động trên đường thẳng với vận tốc biến đổi theo qui luật cho bởi đồ thị hình 2.1. Gia tốc của chất điểm trong thời gian từ 2,5s đầu là bao nhiêu?

Erosion of the beach is normally a slow process. however, in certain situations, large chunks of shore may wash out to sea. what could cause this to happen?

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

What do you think car designers do if the damage caused by a crash test is too severe?