Answer:
(a)10m/s
(b)16 m
Explanation:
We are given that
Mass of particle=m=5 kg
Force=F=25 N
Initial speed=u=3m m/s
a.t=0 and t=2 s
We know that
Force=
Using the formula
Final velocity when t=2 s
Change in velocity=Final velocity-initial velocity
Using the formula
Hence, the change in velocity=10 m/s
(b) t=0 s and t=2 s
We have to find the displacement (
Using the formula and substitute t=2
Hence,the displacement of the particle between t=0 s and t=2 s=16 m
D. A chemical process that changes the composition of rocks, causing them to break down
Answer:
a.
b.
Explanation:
The solution to the differential equation
is the exponential function
and we find from the initial condition
Therefore, we have
Part A:
The maximum velocity that the object can reach is 49 (which the maximum value can have).
Now, 98% of 49 is 48.02; therefore,
Part B:
The distance traveled is the integral of the speed:
Answer:
People depend upon plants to satisfy such basic human needs as food, clothing, shelter, and health care. These needs are growing rapidly because of a growing world population, increasing incomes, and urbanization . Plants provide food directly, of course, and also feed livestock that is then consumed itself.
Answer:
C
Explanation:
The temperature of an object does not change when it is going through a phase change, since there is a single specific point on the temperature gradient where that change occurs. Once the phase change has occurred, the water's temperature can continue to change in that direction, but during the phase change it does not. Hope this helps!