Answer: 17 m/s
Velocity and acceleration are vector quantities. Let leftwards be defines as negative and rightwards as positive direction.
It is given that canoe is drifting left with a velocity of
The canoe rider is moving towards right with a constant acceleration,
we need to find the velocity of canoe after 4 s.
we will use the equation of motion:
where, v is the final velocity, u is the initial velocity, a is the acceleration and t is the time.
Insert the values in the above equation:
Hence, velocity of canoe after 4 s would be 17 m/s.
To solve this problem we will use a free body diagram that allows us to determine the Normal Force.
In general, the normal force would be equivalent to
Since the skier is standing on two skis, his weight will be divide by two
Pressure is given as the force applied in a given area, that is
Replacing F with N'
Our values are given as,
Replacing we have that
Therefore the pressure exerted by each ski on the snow is 776.01Pa
Answer:
Oval and Circle and alot of other shapes
Explanation:
Orbits come in different shapes. All orbits are elliptical, which means they are an ellipse, similar to an oval. For the planets, the orbits are almost circular. The orbits of comets have a different shape.
Answer:
option B
Explanation:
given,
Force exerted by the hydraulic jack piston = F₁ = 250 N
diameter of piston, d₁ = 0.02 m
r₁ = 0.01 m
diameter of second piston, d₂ = 0.15 m
r₂ = 0.075 m
mass of the jack to lift = ?
now,
F₂ = 14062.5 N
F = m g
m = 1435 Kg
hence, the correct answer is option B
The incorrect answer is C