Answer:
No work is done since no distance is given
Explanation:
Since no distance is given, the force is not doing any work
No work is done by the man since we do not know the distance or displacement.
Work is only said to be done when the force applied on an object moves it through a particular distance.
Work done = Force x distance.
Since no distance is given in this problem, we can as well assume that the force applied is doing no work on the object.
Answer:
1) & east of sign post
2) east of sign post
3) east of the signpost.
4)
Explanation:
Given:
- position of motorcyclist on entering the city at the signpost,
- time of observation after being at x=5m east of the signpost,
- constant acceleration of the on entering the city,
- distance of the motorcyclist moments later after entering,
- velocity of the motorcyclist moments later after entering,
<u>Now the initial velocity on at the sign board:</u>
where:
initial velocity of entering the city at the signpost
Putting respective values:
1)
Position at time sec.:
Using equation of motion,
because it has already covered 5m before that point
east of sign post
Velocity at time sec.:
2)
Position when the velocity is :
using equation of motion,
east of sign post
3)
Given that:
acceleration be,
time,
Position after the new acceleration and the new given time:
using equation of motion,
east of the signpost.
4)
now time of observation,
Answer:
They're impressions of organisms preserved in rock. Paleontologists use fossil remains to understand different aspects of extinct and living organisms. They do this by analyzing invertebrate fossils. All of this, all this studying helps to know our past.
Explanation:
All living things are made up of one out more cells is correct.