KCET2017PhysicsMathematics in Physics

Two balls are thrown simultaneously in air. The acceleration of the centre of mass of the two balls when in air,

Options

Adepends on the masses of the two balls
Bdepends on the speeds of the two balls
Cis equal to ( g ) (Acceleration due to gravity)
Ddepends on the direction of motion of the two balls.

Correct answer

C. is equal to ( g ) (Acceleration due to gravity)

Step-by-step solution

[ array l Acceleration of centre of mass = m₁(-g)+m₂(-g) m₁+m₂ =-g (m₁+m₂ ) (m₁+m₂ ) =-g array ] Therefore, acceleration of centre of mass of two balls in air is equal to ( g ), that is, acceleration due to gravity

Practice Mathematics in Physics on Quantrex Academy →

More from Mathematics in Physics

Which of the following statements is/are true? (A) Three vectors not lying in a plane give zero resultant (B) Three vectors lying in a plane can give zero resultant (C) Two vectors 2026 Forces A and B act at a point. The sum of their magnitudes is 50 N and the magnitude of their resultant is 20 N. If the resultant is at 90^ with the smaller force, the magnitudes o 2026 If two vectors A = 4 i + n j + 2 k and B = 2 i + 2 j - k are mutually perpendicular to each other then value of 'n' is 2026 A physical quantity x is related as x = a b^2 c^3 d⁻⁴ . Relative errors in the quantities a , b , c and d are 2%, 1%, 3% and 4% respectively. Relative error in x will be 2026 The percentage error in the measurement of mass of a body and its speed are 0.73 % and 1.84 % respectively. The percentage error in the measurement of its momentum and kinetic ener 2026 The area of parallelogram formed by vectors P = 2 i - j + 5 k and Q = 3 i - 2 j + 4 k is 2026 A cuboid has volume V = l l l , where l is the length of one side. When the length l is measured by a meter scale of least count 1 , mm , the relative percentage error in the measu 2026 For two vectors P and Q , P Q = | P Q | The magnitude of R = P + Q is ( 45^ = 1 2 ) ? 2026 Full Mathematics in Physics list All KCET PYQs