Two forces, with magnitudes 10 N and 15 N, act on an object at 40 to one another. Determine the magnitude of the resultant force acting on the object.

a. 23.55 N c. 18.03 N b. 9.76 N d. 25 N

use the formula of |v| = under square a^2+b^2-2ab.cosQ

2-

A child in a field runs 20 m on a bearing of 020, then 30 m on a bearing of 090. Find the displacement of the child from her starting position.(five marks) a. 50 m c. 36.06 m b. 41.36 m d. 25 m. use the same formula thanky ou

3-

A bee flies from the hive to a flower 15 m away on a bearing of 045, then onto the next flower which is 10 m from the first flower on a bearing of 020. Find the displacement of the bee from the hive.(five marks) a. 24.43 m c. 18.03 m b. 25 m d. 26.78 m

4- A helicopter lifts vertically from a landing pad and flies 10 km on a bearing of 65, then turns and travels 30 km on a bearing of 110. Find the displacement of the helicopter from the landing pad.(five marks) a. 23.99 km c. 40 km b. 44.33 km d. 37.74 km

5-

An airplane is on a heading of 030 at an airspeed of 800 km/h. There is a wind of 75 km/h from 315. Find the resultant velocity of the airplane