Question:
Which one of the following equations related to the motion of an objects is NOT correct? (Symbols carry their usual meanings)
Which one of the following equations related to the motion of an objects is NOT correct? (Symbols carry their usual meanings)
Options:
- a) s = ut + 1⁄2 at2
- b) u = v – at
- c) v2 – u2 = 2ax
- d) Distance travelled during nth second = u + a⁄2 (2n – 1)
- a) s = ut + 1⁄2 at2
- b) u = v – at
- c) v2 – u2 = 2ax
- d) Distance travelled during nth second = u + a⁄2 (2n – 1)
correct answer : d)
Explanation:
The equation s = ut – 1/2*at^2 is not a standard correct equation of motion (it should be + for positive acceleration). Additionally, the formula for distance in nth second is correctly represented as u + a/2*(2n – 1). The formula in (d) matches this.
The equation s = ut – 1/2*at^2 is not a standard correct equation of motion (it should be + for positive acceleration). Additionally, the formula for distance in nth second is correctly represented as u + a/2*(2n – 1). The formula in (d) matches this.