Given
The projectile is in air for a time of t=8 sec
To find
The time it takes to reach the highest point
Explanation
A projectile moves up to the highest point and then again moves down following a parabolic path.
So it will reach the highest point at a time half the time it requires to follow teh parabolic path.
The time taken to reach the highest point is 4 sec
Conclusion
The time taken is 4 sec.
Use P=F/a
whereas P= 350000 and a=.9m2
substitute into the formula we get
350000=f/.9m2 multiply .9 on both sides as LHS=RHS WE get 315000 Newtons as the answer
Answer: no it shouldn't be
Explanation:
The slope of a velocity time graph gives the value of acceleration of car. The slope of car X at t=40 s is less than the slope of car Y. Therefore, the acceleration of car X is less than the acceleration of car Y at t=40 s.
Answer:
Explanation:
Generally the workdone in moving the proton is mathematically represented as
Where 
So
Here 
is the velocity at A with value 50 m/s
So
Also
Here is the velocity at A with value 
=> 
=> 
So
Now this workdone is also mathematically represented as
So
Here 
So
Generally proton movement is in the direction of the electric field it means that 
So
