Table of Contents

## What is the velocity of the car when it travels 200m?

A car starts from rest and with constant acceleration achieves a velocity of 15 m>s when it travels a distance of 200 m. Determine the acceleration of the car and the time required. Kinematics: v0 = 0, v = 15 m>s, s0 = 0, and s = 200 m.

**What is the difference between velocity and speed?**

Velocity: Velocity is defined as the change in displacement per unit of time. Note that both velocity and displacement are vector quantities. Speed is defined as the change in distance per unit of time.

### What is the direction of velocity and acceleration in one dimensional motion?

Note: For the one dimensional motion of a particle (that means motion along a straight line), and for a one-way motion scenario, the directions of velocity and acceleration do not change. This allows us to use speed instead of the velocity vector itself and the magnitude of the acceleration vector instead of the acceleration vector itself.

**What is the speed of car a when t = 0?**

Car A starts from rest at t = 0 and travels along a 60 ft/s straight road with a constant acceleration of 6 ft>s2 until it A B reaches a speed of 80 ft>s. Afterwards it maintains this speed. Also, when t = 0, car B located 6000 ft down the road is traveling towards A at a constant speed of 60 ft>s.

## How do you calculate the stopping distance of a car?

This formula is commonly used in road design for establishing the minimum stopping sight distance required on a given road. With correct parameters, it’s a perfect equation for an accurate calculation of the stopping distance of your car. The AASHTO formula is as follows: s = (0.278 * t * v) + v² / (254 * (f + G)) where:

**How far will your car travel before it comes to a stop?**

Your car will travel 260 meters before it comes to a stop.

### How many cars leave a for B at equal time intervals?

Three cars leave A for B in equal time intervals. They reach B simultaneously and then leave for Point C which is 240 km away from B. The first car arrives at C an hour after the second car. The third car, having reached C, immediately turns back and heads towards B. The first and the third car meet a point that is 80 km away from C.

**What is the average velocity between 40 and 80 km/h?**

In part (a) of the figure, acceleration is constant, with velocity increasing at a constant rate. The average velocity during the 1-h interval from 40 km/h to 80 km/h is 60 km/h: