You are at an elevation 380 m above sea level as you start a motor ride. During the ride, your elevation changes by the following metres: 540 m, –268 m, 116 m, –152 m, 490 m, –844 m, 94 m. What is your elevation relative to the sea level at the end of the ride?

Write opposite of the following: 100 m above sea level.

A place is 37 m above sea level and another is 35 m, below sea level. What is the difference of level between the two places ?

An aeroplane flying 490 m above the ground level at 100 m/s, releases a block. How far on the ground will it strike-

If you are on the west bank of a river that is flowing north with a speed 4m/s. Your swimming speed relative to the water is 5 m/s, and the river is 60m wide. What is your path relative to earth that allows you to cross the river in the shortest time? Explain your reasoning.

If a tower 30 m high, casts a shadow 10sqrt3 m long on the ground, then what is the angle of elevation of the sun ?

Use a positive or a negative number to denote each of the following. (i) 18 m above sea level (ii) 8 m below sea level

An elevator is 25m below the ground level and it ascends at the rate of 5(m)/(min). Find the time takenby it to reach 50m above the ground.

Height of a place A is 1800 m above sea level. Another place B is 700 m below sea level. What is the difference between the levels of these two places?