Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app

Olympiad workbook

Exam: Olympiad workbook
Subject: NSEP
Chapter: Motion in Two Dimensions

Olympiad workbook · NSEP · Motion in Two Dimensions

A racing car moves along a circular track of radius b . The car...

A racing car moves along a circular track of radius

b

. The car starts from rest and its speed increases at a constant rate

\alpha

. Let the angle between the velocity and the acceleration be

\theta

at time

t

. Then

(\cos \theta)

is

Options

A $0$
B $a t^2 / b$
C $b / \left(b+\alphat^2\right)$
D $b /\left(b^2+\alpha^2 t^4\right)^{1 / 2}$

Correct answer

D. $b /\left(b^2+\alpha^2 t^4\right)^{1 / 2}$

Step-by-step solution

No Solution

Practice Motion in Two Dimensions on Quantrex Academy →

More from Motion in Two Dimensions

A particle moves in XY plane according to the relations x=k t and y=k t(1-p t) where k… Olympiad workbook The velocity of a projectile at the highest point of its trajectory is 0.4 of its… Olympiad workbook A projectile is fired from ground with velocity u at an angle θ with the horizontal. It… Olympiad workbook A shot is fired at an angle α to the horizontal up a hill (Considered to be a long… Olympiad workbook A ball is projected from horizontal ground. It attains a maximum height H on its… Olympiad workbook A particle starting from rest at the highest point slides down the outside of a smooth… Olympiad workbook Two balls are projected from the top of a cliff with equal initial speed u . One starts… Olympiad workbook Full Motion in Two Dimensions list All Olympiad workbook PYQs