Question

answer questions help me​

Answer 1

Answer:

plz write the full question it's incomplete

Answer 2

Answer:

• Option 1 : 100 m

El

Given:

• Initial velocity = 0 m/s
• Final velocity = 144 km/hr = 40 m/s
• Time taken = 5s

To Find:

• Distance covered

Concept:

• First we have to find the acceleration of the car. Substituting the data in the second or third equation of motion we get the distance covered by the car.

Solution:

• Initially we have to find the acceleration of the car
• By the first equation of motion,
• v = u + at
• where v = final velocity
•            u = initial velocity
•            a = acceleration
•            t = time taken

Substitute the data

• 40 = 0 + a × 5
• 5a = 40
•  a = 40/5

 a = 8 m/s²

• Hence acceleration of the car is 8 m/s²

• Now we have to find the distance covered by the car
• By the third equation of motion,

v² - u² = 2as

• where v = final velocity
•            u = initial velocity
•            a = acceleration
•            s = distance covered

Substituting the data,

• 40² - 0² =  2 × 8 × s
• 16s = 1600
•    s = 1600/16

   s = 100 m

Hence the distance covered by the car is 100 m

Therefore option 1 is correct.