Crushing particles of solute. The more surface area of the solute exposed to the solvent the faster the solute will dissolve and react with the solvent
Answer:
The distance and average speed are 54.79 m and 10.85 m.
Explanation:
Given that,
Speed = 21.7 m/s
Time = 5.05 s
(a). We need to calculate the distance
Firstly we will find the acceleration
Using equation of motion


Where, v = final velocity
u = initial velocity
t = time
Put the value in the equation


Now, using equation of motion again
For distance,



The distance is 54.79 m.
(b). We need to calculate the average speed during this time

Where, D = total distance
T = time
Put the value into the formula


Hence, The distance and average speed are 54.79 m and 10.85 m.
Answer:
D th
Explanation:
D B. The force applied to the ball is a balanced force.
Answer:


Δd = 
Explanation:
As
, when the car is making full stop,
.
. Therefore,

Apply the same formula above, with
and
, and the car is starting from 0 speed, we have

As
. After
, the car would have traveled a distance of

Hence 
As
we can simplify 
After t time, the train would have traveled a distance of 
Therefore, Δd would be 