1
KCET 2023
MCQ (Single Correct Answer)
+1
-0

A ball of mass $$0.2 \mathrm{~kg}$$ is thrown vertically down from a height of $$10 \mathrm{~m}$$. It collides with the floor and loses $$50 \%$$ of its energy and then rises back to the same height. The value of its initial velocity is

A
Zero
B
$$14 \mathrm{~ms}^{-1}$$
C
$$196 \mathrm{~ms}^{-1}$$
D
$$20 \mathrm{~ms}^{-1}$$
2
KCET 2022
MCQ (Single Correct Answer)
+1
-0

A smooth chain of length $$2 \mathrm{~m}$$ is kept on a table such that its length of $$60 \mathrm{~cm}$$ hangs freely from the edge of the table. The total mass of the chain is $$4 \mathrm{~kg}$$. The work done in pulling the entire chain on the table is (Take, $$g=10 \mathrm{~m} / \mathrm{s}^2$$)

A
6.3 J
B
3.6 J
C
2.0 J
D
12.9 J
3
KCET 2020
MCQ (Single Correct Answer)
+1
-0

A body is initially at rest. It undergoes one-dimensional motion with constant acceleration. The power delivered to it at time $$t$$ is proportional to

A
$$t^{1 / 2}$$
B
$$t$$
C
$$t^{3 / 2}$$
D
$$t^2$$
4
KCET 2018
MCQ (Single Correct Answer)
+1
-0
Two particles of masses $m_1$ and $m_2$ have equal kinetic energies. The ratio of their momentum is
A
$m_1: m_2$
B
$m_2: m_1$
C
$\sqrt{m_1}: \sqrt{m_2}$
D
$m_1^2: m_2^2$
KCET Subjects
EXAM MAP