The current in a river is 1.0 meters/second. Britney swims 300 meters against the current. If she normally swims with a speed of
2 answers:
Answer:
t = 300 seconds
Explanation:
It is given that,
Speed of the current in the river,
Distance covered by Britney, d = 300 m
Speed of Britney,
It is mentioned that Britney swims against the current. Her downstream speed is given by :
v = 1 m/s
Let t is the time taken by her to complete her trip. t is given by :
t = 300 seconds
So, the time taken by her the complete her trip is 300 seconds. Hence, this is the required solution.
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Answer
acceleration due to gravity on Jupiter's moon,g' = 1.81 m/s²
weight of water melon on earth, W = 40 N
acceleration due to gravity on earth, g = 9.8 m/s²
a) Mass on the earth surface
M = 4.08 Kg
b) Mass on the surface of Lo
Mass of an object remain same.
Hence, mass of object at the surface of Lo = 4.08 Kg.
c) Weight at the surface of Lo
W' = m g'
W' =4.08 x 1.81
W' = 7.38 N
Answer:
Loss,
Explanation:
Given that,
Mass of particle 1,
Mass of particle 2,
Speed of particle 1,
Speed of particle 2,
To find,
The magnitude of the loss in kinetic energy after the collision.
Solve,
Two particles stick together in case of inelastic collision. Due to this, some of the kinetic energy gets lost.
Applying the conservation of momentum to find the speed of two particles after the collision.
V = 6.71 m/s
Initial kinetic energy before the collision,
Final kinetic energy after the collision,
Lost in kinetic energy,
Therefore, the magnitude of the loss in kinetic energy after the collision is 10.63 Joules.