Pls help me solve this

Question

asked Aug 12, 2022 6.7k views

1 Answer

Brown Nightingale · Answer 1 · 2022-08-18T01:00:18+0000

Answer:

a) The uniform velocity travelled by the car is 10 meters per second.

(Point b has been erased by the user)

c) The distance travelled by the car with uniform velocity is 100 meters.

Step-by-step explanation:

a) Calculate the uniform velocity travelled by the car:

The uniform velocity is the final velocity (
), in meters per second, of the the uniform accelerated stage:

$v = v_(o) + a\cdot t$ (1)

Where:

v_(o) - Initial velocity, in meters per second.

- Acceleration, in meters per square second.

- Time, in seconds.

If we know that
$v_(o) = 0\,(m)/(s)$ ,
$a = 2\,(m)/(s^(2))$ and
$t = 5\,s$ , then the uniform velocity is:

$v = 0\,(m)/(s) + \left(2\,(m)/(s^(2)) \right)\cdot (5\,s)$

$v = 10\,(m)/(s)$

The uniform velocity travelled by the car is 10 meters per second.

(Point b has been erased by the user)

c) The distance travelled by the car (
$\Delta x$ ), in meters, with uniform velocity is calculated by the following kinematic expression:

$\Delta x = v\cdot t$ (2)

If we know that
$v = 10\,(m)/(s)$ and
$t = 10\,s$ , then the distance travelled is:

$\Delta x = \left(10\,(m)/(s) \right)\cdot (10\,s)$

$\Delta x = 100\,m$

The distance travelled by the car with uniform velocity is 100 meters.