Which of the following statements are correct about an object in equilibrium under parallel forces? i. the total clockwise moments of the forces about any point equals the total anti-clockwise moments about the same point. ii. the total forces in one direction equals the total forces in the opposite direction. iii. the resolved components along the x-axis equals the resolved components along the y-axis.
- A. i and ii only
- B. i and iii only
- C. ii and iii
- D. i, ii, and iii only
A particle of mass M which is at rest splits up into two. If the mass and velocity of one of the particles are m and v respectively, calculate the velocity of the second particle
- A. \(\frac{mv}{M}\)
- B. \(\frac{Mv}{M - m}\)
- C. \(\frac{mv}{M + m}\)
- D. \(\frac{mv}{M - m}\)
A car moving with a speed of 90kmh\(^{-1}\) was brought uniformly to rest by the application of the brakes in 10s. How far did the car travel after the brakes were applied?
- A. 125m
- B. 150m
- C. 250m
- D. 15km
Which of the following is a fundamental unit?
- A. Newton
- B. Watt
- C. Joule
- D. Second