Question

`CCT-3SUBJECT- SCIENCECLASS-VIITOPIC - MOTION AND TIMECONCEPT-SPEEDTwo buses A and B started their journey from Belapur the place where Manish and his friendlive. Manish was sitting in bus A and his friend was sitting in bus B.Manish found that bus A travelled60 km in 2 hours and his friend found that bus B travelled 72 km in 3 hours.Both Manish and hisfriend reached their homes after completed their journey.On next day Manish and his friendstarted their journey in a car at 8 AM.On the way Manish and his friend noted distance covered bycar at 8:30 AM 9:00 AM 9:30 AM and at 10 AM.Time8:30 AM9:00 AM9:30 AMDistance20 KM40 KM60 KMA graph between distance covered by car and time was given below.10 AM80 KM8060Distance 40in km208 AM8:30 AM9:00 AM9:30 AM10 AMTime in hoursQuestion 1: Which of the following is correct?a) Bus A moves faster than bus B.b) Bus B moves faster than Bus A.c) Bus A and bus B moves with same speed.d) Can not decide which is fasterQuestion 2: What can you say about speed from the graph ?a) Covers unequal distances in equal intervals of time.b) Car is moving with uniform speed.c) Car is moving with non-uniform speed.d) Car is moving with variable speed.Question 3. Which of the following is correct?a) Speed = distance/timeb) Speed = time/distancec) Speed= distance X timed) Distance= speed/timeQuestion 4. What is the speed of the car ?a) 30 km/hb) 35 km/hc) 40 km/hd) 45 km/h`​

Answer 1

Explanation:

1.Bus B is moving faster than bus A

2, car is moving uniform speed

3.speed=$\frac{distance}{time}$

4.car's speed 30 km/hb

$\huge {\underline {\mathtt \color {gold} {RADHE ~radhe }}}$$\huge {\underline {\mathtt \color {gold} {RADHE ~radhe }}}$$\huge {\underline {\mathtt \color {gold} {RADHE ~radhe }}}$$\huge {\underline {\mathtt \color {gold} {RADHE ~radhe }}}$$\huge {\underline {\mathtt \color {gold} {RADHE ~radhe }}}$

Answer 2

Explanation:

$\huge {\underline {\mathcal \color {gold} {Answer }}}$1.Bus B is moving faster than bus A

2, car is moving uniform speed

3.speed=$\frac{distance}{time}$

4.car's speed 30 km/hb