Question

1 Write difference between distance and displacement
2. What is intantanious acceleration
3. A person travels first one half distance with velocity 40km/hr second half with 60km/hr find average velocity
4. A car is moving with speed of 72km/hr break is applied and speed become 36 km/hr in 10 second find acceleration
5. What is difference between inertial and non inertial frame of reference​

Answer 1

Explanation:

Given , sec−11+x2+cosec−1(y1+y2)+cot−1(z1)=π

Given , sec−11+x2+cosec−1(y1+y2)+cot−1(z1)=π⇒tan−1x+tan−1y+tan−1z=π

Given , sec−11+x2+cosec−1(y1+y2)+cot−1(z1)=π⇒tan−1x+tan−1y+tan−1z=π⇒tan−1(1−xy−yz−zxx+y+z−xyz)=π=tan−1(0)

Given , sec−11+x2+cosec−1(y1+y2)+cot−1(z1)=π⇒tan−1x+tan−1y+tan−1z=π⇒tan−1(1−xy−yz−zxx+y+z−xyz)=π=tan−1(0)⇒x+y+z−xyz=0

Given , sec−11+x2+cosec−1(y1+y2)+cot−1(z1)=π⇒tan−1x+tan−1y+tan−1z=π⇒tan−1(1−xy−yz−zxx+y+z−xyz)=π=tan−1(0)⇒x+y+z−xyz=0⇒x+y+z=xyz