A racing car is traveling along a horizontal track. The car, starting from rest accelerates uniformly at 4.50ms-² for 15s when it reaches maximum speed. It then travels at this speed for 20s before deceleration uniformly at 5.60ms-² until it come to rest. i. Determine the maximum speed reached by the car
Ii. Determine the distance travelled by the car before reaching maximum speed
iii. Determine the time taken for the car to decelerate from it’s maximum speed and comes to rest
iv. Determine the total distance travelled by the car

it is the second option.

iron would move it is magnetic there is a mag field around the current in the wire

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s

it is a negative acceleration