Question

Can a body have increasing velocity with decreasing acceleration?

Answer 1

yes it can. as long as acceleration is positive ... the velocity of the body will always be increasing.

Answer 2

i dont think if acc is zero velocity is uniform. . . decreasing acc will decrease speed as well
cant say about circular motion . . .

Answer 3

I can't think about an example, or any case in particular but i know these things are relative.. So, it might be possible.

Answer 4

when you throw an object upwards, its velocity increases but with decreasing acceleration, right?

Answer 5

do you mean
\[ {da \over dt} < 0 \text{ or } a < 0\]

Answer 6

@physicsme the acceleration is constant in that case. and it's equal to -g

Answer 7

oh right @ujjwal

Answer 8

@experimentX he meant a<0

Answer 9

When you throw something upward, it's velocity doesn't increase.

Answer 10

when driving, we press the brakes suddenly, it takes a while for the car to stop, so during that time, the velocity increases but acc. decreases?

Answer 11

this means
\[ {dv\over dt} < 0\]
which means you cannot have velocity increasing when acceleration is negative.

Answer 12

no .. .not quite. decreasing acceleration means the rate of change of acceleration is negative.

Answer 13

this is like ... we are launching rocket in zero gravity ... the rate of ejection of fuel decreases.

Answer 14

yes, for example overall acceleration of a person falling with a parachute is continuously decreasing while its velocity is increasing untill it reach a certain speed. in this case acceleration is decreasing but still it is positive.

Answer 15

yep ... that is also the case.

Answer 16

You are getting on the freeway and you floor it up the on ramp with high acceleration, but as you get into the lane, you lower your rate of acceleration while the car slowly increases its speed to that of the other cars.

Answer 17

So the answer is yes or no?

Answer 18

yes

Answer 19

which is the best example?

Answer 20

the parachute ... by celos

Answer 21

I actually didn't get that example well

Answer 22

imagine a loose balloon at zero gravity