When an astronaut brings a cube from the Earth to the Moon, the inertial mass remains constant, but the weight decreases.
<h3>What is the difference between mass and weight?</h3>
Mass of the body is defined as the amount of matter a body have. It is denoted by m and its unit is kg.
Weight is defined as the amount of force an object expert on the surface. It is given as the product of mass and the gravitational pull.
When an astronaut brings a cube from the Earth to the Moon, the inertial mass remains constant, but the weight decreases.Because the value of the gravitational acceleration is different on the moon.
Hence, option D is correct.
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Answer:
46.15m/s
Explanation:
We are given that
Initial speed,u=38 m/s
Height of cliff,h=70 m
We have to find the speed with which the cycle strikes the ground at a height 35 m on the other side.
h'=35 m
Using conservation law of energy
Where
Substitute the values
Answer:
Explanation:
Question 1:
Mass=1kg
Acceleration due to gravity=9.8m/s^2
Height=10m
on the before falling it has potential energy
Potential energy=mass x acceleration due to gravity x height
Potential energy=1 x 9.8 x 10
Potential energy=98 joules
Question 2:
Potential energy=kinetic energy base base on energy transformation
Kinetic energy=(mass x (velocity)^2)➗2
98=(1 x(velocity))^2 ➗ 2
Cross multiplying
98 x 2=(velocity)^2
196=(velocity)^2
Velocity=√(196)
Velocity=14
Velocity=14m/s
Answer:
9m/s²
Explanation:
Given parameters:
Initial velocity = 30m/s
Final velocity = 0m/s
Distance traveled = 50m
Unknown:
Deceleration = ?
Solution:
To solve this problem, we apply the proper motion equation;
V² = U² + 2aS
V is the final velocity
U is the initial velocity
a is the acceleration
S is the distance
Insert the parameters and solve;
0² = 30² + 2(a)50
-900 = 100a
a = -9m/s²
The negative value indicates deceleration.
The motorcycle decelerates at a rate of 9m/s²
After 1 second speed = 9.8 m/s
After 2 second speed = 19.6 m/s