The answer is a.
The graph's line is higher if velocity is higher, and lower if velocity is lower. This is because the y axis is velocity. Thus, the fastest (highest velocity) that the car went is when the line was highest, and that is when x is 1.
Answer:
voltage is 1.38 V
Explanation:
given data
weights = 150 gm = 0.150 kg
sensitivity = 0.5 volts/Newton
to find out
large a voltage
solution
we know here in by symmetry so here in x axis
F3 will be
F3 = 2mgcos(20)
F3 = 2(0.150)(9.8)cos20
F3 = 2.76 N
so volatge is
voltage = 2.76×sensitivity
voltage = 2.76×0.5
voltage = 1.38
so voltage is 1.38 V
Answer:
5010 m
Explanation:
The vertical position of the teacher at time t can be found by using the equation:
where
h is the initial height
is the initial velocity (negative since it's downward)
is the acceleration of gravity
t is the time
The teacher reaches the ground when y = 0, so the equation becomes
Substituting t = 30 s, we find the initial height:
Answer: 588 joules
Explanation:
Work is done when force is applied on an object over a distance ( whether vertical or horizontal). It is measured in joules.
Thus, Workdone = Force X distance
- Vertical distance to be moved by the brick = 12 metres
- Mass of box = 5kg
- Acceleration due to gravity when box was lifted represented by g is a constant with value of 9.8m/s^2
Now, recall that Force = Mass x acceleration due to gravity
i.e Force = 5kg x 9.8m/s^2
Force = 49 Newton
So, Workdone = Force X Distance
Workdone = 49 Newton X 12 metres
Workdone = 588 joules
Thus, 588 joules of work was done.
