1
MHT CET 2020 16th October Morning Shift
MCQ (Single Correct Answer)
+1
-0

A vehicle of mass $$m$$ is moving with momentum $$p$$ on a rough horizontal road. The coefficient of friction between the tyres and the horizontal road is $$\mu$$. The stopping distance is ($$g=$$ acceleration due to gravity)

A
$$\frac{p^2}{2 \mu m^2}$$
B
$$\frac{p^2}{2 \mu g m^2}$$
C
$$\frac{p^2}{\mu g m^2}$$
D
$$\frac{p^2}{2 \mu g}$$
2
MHT CET 2019 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

If the radius of the circular path and frequency of revolution of a particle of mass $m$ are doubled, then the change in its kinetic energy will be $\left(E_i\right.$ and $E_1$ are the initial and final kinetic energies of the particle respectively,)

A
12 $E_f$
B
13 $E_i$
C
8 $E_f$
D
15 $E_i$
3
MHT CET 2019 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A force $(F)=-5 \hat{\mathbf{i}}-7 \hat{\mathbf{j}}+3 \hat{\mathbf{k}}$ acting on a particle causes a displacement $(s)=3 \hat{\mathbf{i}}-2 \hat{\mathbf{j}}+a \hat{\mathbf{k}}$ in its own direction. If the work done is 14 J , then the value of ' $a$ ' is

A
0
B
5
C
15
D
1
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