1.speed 65km/h,time 2 1/2, distance_________

2.speed_________,time30sec,

distance180m

3.speed 55 km/h,time_________,distance 165km

4.speed 70km/h,time 3 hour,distance_______

5.speed_________ time 1 1/2

distance 180km

**Answer:**

### 1. Distance Formula:

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** **** **** **** ****=**** ****6****5****k****m****/****h****r**** ****×**** ****2**** ****1****/****2**** ****h****r**

__D____ ____=____ ____1____6____2____.____5____ ____k____m__

__D__

__=__

__1__

__6__

__2__

__.__

__5__

__k__

__m__

**2****.**** ****S****p****e****e****d**** ****F****o****r****m****u****l****a****:**

**S**** ****=**** ****d****i****s****t****a****n****c****e**** ****/**** ****t****i****m****e**

** **** **** ****=**** ****1****8****0****m**** ****/**** ****3****0****s****e****c**

__S____ ____=____ ____6____ ____m____/____s____e____c__

__S__

__=__

__6__

__m__

__/__

__s__

__e__

__c__

**3****.**** ****T****i****m****e**** ****F****o****r****m****u****l****a****:**

**T**** ****=**** ****d****i****s****t****a****n****c****e**** ****/**** ****s****p****e****e****d**

** **** **** **** ****=**** ****1****6****5****k****m**** ****/**** ****5****5****k****m****/****h****r**

__T____ ____=____ ____3____ ____h____r__

__T__

__=__

__3__

__h__

__r__

**4****.**** ****D****i****s****t****a****n****c****e**** ****F****o****r****m****u****l****a****:**

**D**** ****=**** ****s****p****e****e****d**** ****×**** ****t****i****m****e**

** **** **** **** ****=**** ****7****0****k****m****/****h****r**** ****×**** ****3****h****r**

__D____ ____=____ ____2____1____0____ ____k____m__

__D__

__=__

__2__

__1__

__0__

__k__

__m__

**5****.**** ****S****p****e****e****d**** ****F****o****r****m****u****l****a****:**

**S**** ****=**** ****d****i****s****t****a****n****c****e**** ****/**** ****t****i****m****e**

** **** **** ****=**** ****1****8****0****k****m**** ****/**** ****1**** ****1****/****2****h****r**

__S____ ____=____ ____2____7____0____ ____k____m____/____h____r__

__S__

__=__

__2__

__7__

__0__

__k__

__m__

__/__

__h__

__r__

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