Answer:
5.61s
Explanation:
And we need to find out the time taken by the ball to reach the ground .
- The initial velocity of the ball will be 0 since it is dropped .
Here we can use the First equation of motion , namely ;
where the symbols have their usual meaning . Now substituting the respective values , we have,
<u>Answer</u>
= 100 miles per hour.
<u>Explanation</u>
Velocity is the rate of change of displacement.
Velocity = Distance /time taken
= 500/5
= 100 mile per hour.
Answer:
accelerating
Explanation:
If we consider(v > u) Acceleration:
final velocity(v)= 14m/s
initial velocity(u)=10m/s
time taken(t)= 2 seconds
a= =2m/s²
If we consider (v<u) Deceleration:
final velocity(v)= 3m/s
initial velocity(u)=9m/s
time taken(t)=2 seconds
a= = -3m/s²
Answer:
Angular acceleration,
Explanation:
It is given that,
Displacement of the rotating wheel,
Time taken, t = 2.9 s
Initial speed of the wheel,
Final speed of the wheel,
Let is the angular acceleration of the wheel. Using the third equation of kinematics to find it as :
So, the angular acceleration of the wheel is . Hence, this is the required solution.
Answer:
Distance travelled: 20meters
Displacement: 10 meters.
Explanation:
In geometry and mechanics, a displacement is a vector whose length is the shortest distance from the initial to the final position of a point P undergoing motion. It quantifies both the distance and direction of the net or total motion along a straight line from the initial position to the final position of the point trajectory. A displacement may be identified with the translation that maps the initial position to the final position.