A car starts from rest and accelerates along a straight line path in one minute. It finally attains a velocity of 40 meters/second. What is the car's average acceleration?

Acceleration of car is 0.67 m/s².

Step-by-step explanation:

It is given that,

Initially, the car is at rest. Its initial velocity will be 0.

It accelerates along a straight line path in one minute or 60 seconds.

Final velocity of car, v = 40 m/s

We have to find the acceleration of the car. It can be calculated using first equation of motion as :

Explanation:

Hence, this is the required solution for the acceleration of the car.

d. platinum would have the greatest temperature increase because it has the lowest specific heat.

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =