Question
What is the work to be done to increase the velocity of
a car from 30 km h⁻¹ to 60 km h⁻¹ if the mass of the car is 1500 kg?Solution
Using the work-energy theorem, the work done is equal to the change in kinetic energy.
More General science Common Questions
An integer with positive sign (+) is always greater than
A number when divided by 25 leaves a remainder of 19. What will be the remainder when five times that number is divided by 25?
If (3 - 4/(1+ 2/(3+ 1/(2+1/3))))th part of a journey takes 45 minutes, then to complete 4/5th of that journey, it will take:
103² + 75² - 25² =?
The ratio of two natural numbers 'x' and 'y' is 9:13, respectively. When 30 is added to 'x' and 15 is subtracted from 'y', the ratio of 'x' to 'y' becom...
- The total of two numbers is 130. If their LCM is 432 and HCF is 12, determine the smaller number.
A two-digit number has a sum of its digits equal to 8. Additionally, if 27 is subtracted from this number, the resulting number has its digits reversed....
- For which values of x is the expression 25x - 5x² - 100 positive?
- Find the interval of x where the expression 21x - 3x² - 54 is greater than zero.
- 32% of 40% of 500 = q + 12, find the sum of squares of the digits in ‘q’.
