Answer:
Positive sign for negative velocity and minus sing for positive velocity
Explanation:
In the case of the negative velocity, the sign of the acceleration that reduces its magnitude is the positive sign, since being in the opposite direction to the movement indicates a deceleration or braking. In the case of the positive velocity, the sign of the acceleration that reduces its magnitude is the negative sign, since being in the opposite direction to the movement indicates a deceleration or braking. We observe that there will always be a reduction in the magnitude of the velocity if the acceleration goes in the opposite direction.
Answer:
No. Touching a live electric current is never a good idea.
Explanation:
Complete Question
While john is traveling along a straight in interstate highway, he notices that the mile marker reads 242 km. John travels until he reaches the 147 km marker and then retraces his path to the 161 km marker. What is John's resultant displacement from the 242 km marker? How far has he traveled answer in units of km
Answer:
The resultant displacement
The total distance traveled by john is
Explanation:
From the question we are told that
The first position of john from the finish point is
The second position of john from the finish point is
The third position of john from the finish point is
Generally the displacement from the 242 km marker is mathematically represented as
Here we used instead of because is further than from the finish point
=>
Generally the total distance traveled by John is mathematically evaluated as
=>
=>
Answer:
velocity
acceleration
time taken
air pressure
size of the ball
gravity(gravitational acceleration )