The power delivered by a car engine is constant. A car starts from rest. Resistance forces are negligible. Which graph shows the variation with time of the speed of the car?

The diagram shows two identical containers, $X$ and $Y$, that are connected by a thin tube of negligible volume. Initially container $X$ is filled with water of mass $m$ up to a height $h$ and $Y$ is empty.

The valve is then opened and both containers contain equal quantities of water. The loss of gravitational potential energy of the water is:

The graph shows the path followed by the stone, until just before hitting the ground, in the absence of the air resistance.

Draw the path of the stone in the presence of an air resistance force opposite the velocity and proportional to the speed.

For given graph state and explain motion without air resistance and with air resistance. And why it's happening?

For the given information, determine the power generated by the helicopter. ( in W)

$F= {\mathrm{\pi \rho v}}^2{\mathrm{R}}^2$

$\rho = 1.2 kg/m^3$

$m=0.30 kg$

$R = 0.25 m$

$v = 3.5 m/s$

If the object moving in the horizontal direction with an acceleration $29.4 m/s^2$, what is the velocity after time $0.95s$? (in m/s)

Here initial velocity is zero.

If the particle is moving in the horizontal direction, then what is the work done by the particle? (in J)

Force exerted on the particle is $11.75 N$ And travelled distance is $12 m$