Chap. 3 (deadline: 10:00 pm, Saturday, 2/10/18) roblem 3.20 12 Part A A car is m

Question

Chap. 3 (deadline: 10:00 pm, Saturday, 2/10/18) roblem 3.20 12 Part A A car is moving with speed 17.1 m/s due south at one moment and 26.0 m/s due east 6.00 s later. Determine the magnitude and direction of its average velocity over this time interval 22.8 m/s,33.2 north of eas 45.5 m/s, 45.0 north of east 324 m/s, 56.8 north of eas The averao velocity cannot be determined Request Answer PartB Determine he magntude and direction of its average acceleration over this time interva 2.59 m/s.450° north of east 5.19 m/s, 333° nor, of east 5. 19 m/82 , 567" north of oast The average acceleration cannot be determined Request Answer 20 3 0

Explanation / Answer

As displacement isn't given in the time intervals, it is not possible to give average velocity.

Average acceleration= dv/dt= (26i- 17.1j)/6= 4.33i- 2.85j

Magnitude= (4.332+2.852)1/2= 5.183 m/s2.

Angle= tan-1(2.85/4.33)=33.3 deg.

Because the distance isn't known in the particular time intervals, the avg speed is unknown.

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