Answer:
4 %
Explanation:
mass of the object 1, m₁ = 0.1 Kg
initial velocity of object 1,v₁= 0.2 m/s
mass of object 2, m₂ = 0.15 kg
initial speed of the object 2. v₂ = 0 m/s
Kinetic energy retained by the object 1 = ?
using the formula to calculate velocity of the ball after collision
negative sign represent the velocity is in opposite direction after collision.
Initial KE
final KE
% of KE retained
=
=
= 4 %
the percentage of Kinetic energy retained after collision is equal to 4 %
Answer:Heat can travel from one place to another in three ways: Conduction, Convection and Radiation.
Explanation:
Answer:
answer is d.
Explanation:
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The velocity is 0 m/s, as when it reaches the top, the object has no velocity for a small period of time as it then switched to a negative velocity when coming down
Answer:
F = 1.0178 × 10^(-2) dyne
Explanation:
From stokes law, the viscous force also known as drag force on rain drop is given by the formula;
F = 6πηrv
Where;
η is viscosity
r is radius
v is velocity
We are given;
η = 18 × 10^(-5) poise
r = 0.3 mm = 0.03 cm
v = 1 m/s = 100 cm/s
Thus;
F = 6π × 18 × 10^(-5) × 0.03 × 100
F = 1.0178 × 10^(-2) dyne