Explanation:
A pilot flying a weight; it takes t = 3.4 s to hit the ground, during which it travels a horizontal distance d = 120 m
h = g/2*t^2
h= 4.903*3.4^2
h=56.701 m
V = d/t
V= 120/3.4
V=35.3 m/sec
Now the pilot does a run at the same height but twice the speed.
How much time (t1) does it take the weight to hit the ground?
t1 = t = 3.4 sec (depending just upon height)
Answer:
Explanation:
Initial velocity of mailbag u = 2 m/s
acceleration downwards a = g = 9.8 m/s²
time t = 3 s
a ) final velocity v = ?
v = u + at
= 2 + 9.8 x 3
= 31.4 m /s
b )
s = ut + 1/2 g t²
s is relative displacement of mailbag
u = relative initial velocity of mailbag = 0
relative acceleration = g = 9.8 m /s²
time t = 3 s
s = 0 + 1/2 x 9.8 x 3²
= 44.1 m
relative displacement of mailbag = 44.1 m .
This means that two objects will reach the ground at the same time if they are dropped simultaneously from the same height. ... When air resistance plays a role, the shape of the object becomes important. In air, a feather and a ball do not fall at the same rate.
Answer:
Mass and time are not vector quantities .
Explanation:
All the physical quantities can be classified into two major categories that is :
Scalar quantities
- They are those that describes only the magnitude and they are regarded as incomplete quantities as they don't provide complete information.
For example : Speed ,Mass, Time etc
Vector quantities
- They are complete quantities that can be described in magnitude as well as direction .
For example : Velocity ,gravity ,Acceleration etc
Once a hypothesis is tested and confirmed, and then tested again and confirmed again many many others, it may provide the basis for or become a part of, a
Scientific theory.
I hope this helped you!
Brainliest answer is always appreciated!