acceleration of car is required to be calculated

**moonnightingale** · September 15th 2011, 08:36 AM

If a car required 18 seconds to stop to zero speed while it was moving at 50 Km/h, how can we calculate the acceleration or deceleration of car during crash

**e^(i*pi)** · September 15th 2011, 09:04 AM

Originally Posted by moonnightingale

If a car required 18 seconds to stop to zero speed while it was moving at 50 Km/h, how can we calculate the acceleration or deceleration of car during crash

$a = \dfrac{v-u}{t}$

You know v, u and t. It is perfectly acceptable for a to be negative.

**moonnightingale** · September 15th 2011, 09:16 AM

the answer coes to be -0.77 m/sec
is it correct

**e^(i*pi)** · September 15th 2011, 09:30 AM

Originally Posted by moonnightingale

the answer coes to be -0.77 m/sec
is it correct

EDIT: Your magnitude (-0.77) is correct but your units are not

Remember that acceleration is measured in $\text{m}\cdot \text{s}^{-2}$

Thread: acceleration of car is required to be calculated

LinkBack

Thread Tools

Display

acceleration of car is required to be calculated

Re: acceleration of car is required to be calculated

Re: acceleration of car is required to be calculated

Re: acceleration of car is required to be calculated

Similar Math Help Forum Discussions

Finding a predictive distribution when posterior distribution is already calculated?

how value of d is calculated in this equation

plz try this simple quest..the ans is different as i calculated.

Pre calculated

Standard Deviation - why not calculated like this...?

Search Tags