Answer:
Float
Explanation:
It is given that,
The density of water is 1 g/mL
The density of a rock is 0.87 g/mL
It can be seen that the density of water is more than that of rock. The density of an object is calculated from its mass and volume.
If the density of liquid in which it is placed, is more that that of the object, it will float at the top.
Hence, in this case the rock will float.
Acceleration = force / mass = 20 / 2 = 10 m/s^2
Answer:
The other angle is 120°.
Explanation:
Given that,
Angle = 60
Speed = 5.0
We need to calculate the range
Using formula of range
...(I)
The range for the other angle is
....(II)
Here, distance and speed are same
On comparing both range
Hence, The other angle is 120°
Answer:
Explanation:
The kinematic equation
gives the final velocity of the object given the initial velocity , the acceleration , and the distance traveled .
For our case, the object is dropped; therefore,
I.e. the initial velocity is zero. The acceleration due to gravity is
,
and the distance traveled is .
Putting the values into the equation we get:
The final velocity of the object is 44.27 m/s.
Answer:
no additional information required.
Explanation:
given,
vertical height, h = 35 m
acceleration due to gravity, g = 9.8 m/s²
time taken by the bullet to fall in the water = ?
initial vertical velocity of the bullet = 0 m/s
using equation of motion for the time calculation
t = 2.67 s
The time taken by the bullet to fall in the ocean is equal to 2.67 s.
Hence, there is no additional information required.