DYNTCS 12. A little red wagon with mass 7 kg moves in
straight line on a frictionless horizontal
Forced=ON
surface. It has an initial speed of 4 m/s and
Final speed
Acceleration
We have. Poma
then is pushed 3 m in the direction of the
F 10
Initial velocity by a force of 10 N. Calculate
= 1 43 m/sec
the wagon's final speed and the acceleration Again, as - 31433
produced by the forces
or v = 24 58
= 496 m/sec
Solution:
Final speed (v) = 496 m/sec
Given Mass of wagon (m) = 7 kg
acceleration = 1.43 m/sec
Initial speed (u) = 4 m/sec
Self-Test Problems
A car of mass of 1000 kg is accelerating at 2 ms. What resultant force acts on the ear? If the
resistance to the motion is 1000 N, what is the force due to engine?
Ans: 2000 N. 3000 N
A box of mass 50 kg is pulled up from the hold of a ship with an acceleration of 1 ms by a vertical
rupe attached to it. Find the tension in the rope. What is the tension in the rope when the box move
up with a uniform velocity of 1 m 8-19
Ans: 550 N. 500
A lift moves (i) up and (ii) down with an acceleration of 2 ms. In each case, calculate the reaction
the floor on a man of mass 50 kg standing in the lift
Ans: (i) 600 N (u) 400
A ball of mass 0.2 kg falls from a height of 45 m. On striking the ground, it rebounds in 0.1 s with to

you have to draw the persons position over there

choosing tennis and golf balls is your inde choice.

their mass and volume are dep

elly's long hair:

a. if the salon only takes cash, then this isn't the problem. it doesn't matter how much she has in her checking account.   she can't get a haircut until she has the cash.

b. if she has overdraft protection, then there's no problem.   she can go ahead and write a check that her account can't cover, then sometime later, pay the bank some outrageous usury for loaning her a few bucks for a few days, but with beautiful hair.

c. if elly has some principles, and doesn't want to write a bad check, then now she has a problem.   her desire for the new hairstyle is in conflict with her honesty and integrity.

d.   if the bank will not process a check she writes, then even if she had a million $$ in her account, she couldn't use any of it.   the amount she has in her account is not the problem.   and if i may suggest, she might as well close her checking account, and put the money where it'll work for her.   it's not doing her a bit of good in a checking account, since she can't write any checks.

justin can't pay the full balance:

a. he can't even handle the credit limit he has now.   under no circumstances should he ask for a higher limit.

b.   he can ask for the grace period to be extended.   but that's no solution, the bank will almost certainly refuse anyway, and there are much better options.   he knew the rules of his credit card when he started using it.

c.   he definitely should pay the interest on the balance, plus as much of the balance as he can cover at the same time.

d.   he definitely should pay the minimum otherwise they could shut down his card.   he should also pay as much more as he possibly can.   he should also remember the awkward situation he's in, stop buying stuff on credit that he can't afford, and avoid adding any more debt.

i'd say that justin's best best option isn't on this list of choices.   what he has to do:   pay as much as he can at least the minimum payment plus as much more as he can and then avoid adding more debt.

i think the answer would be reserve.