If acceleration is zero what statement about velocity is true *

Physics

2 answers:

Wittaler [7]3 years ago

6 0

Answer:

Option"B" is correct.

Explanation:

when a body move with constant velocity then acceleration is zero.

LenaWriter [7]3 years ago

6 0

If the acceleration of an object is 0, it means the velocity of an object is constant and not changing with respect to time,

So, the correct option will be :

=》B)Velocity is constant

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At a horse race, all horses started from rest. As soon as the gates were open the horses started to trot. After 300s, Blacky was

Bas_tet [7]

Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity. It can be calculated by the expression:

a = v2 - v1 / t

From the given in the problem, we can solve for v2, the final velocity:

3 = v2 - 0 / 300
v2 = 900 m/s

4 0

4 years ago

There are 2 questions into 1

kiruha [24]

As we know that magnitude of the vector is 670 m

and it is inclined 25 degree with x axis

now we know that component of vector along x direction is given as

$x = L cos\theta$

$x = 670 cos25$

$x = 610 m$

Part 2)

In order to find the other component of the vector we can use

$y = L sin\theta$

$y = 670 sin25$

$y = 280 m$

3 0

3 years ago

The total weight of a car with passengers is 30,000N. The area of contact of each of the four tyres with the ground is 0.025m2.

vlabodo [156]

Answer:

The minimum pressure car tire pressure is 300,000 Pa

Explanation:

Pressure

It's a measure of the force exerted by an object per unit surface:

$\displaystyle P=\frac{F}{A}$

Where F is the force applied on a surface area A.

We are given the total weight of a car with passengers as Ft=30,000 N and we also know the area of contact of each tire with the ground as $A=0.025 m^2$ .