) Is work a vector or scalar? Define “energy”. A wooden sphere of mass 0.15 kg is thrown
with a velocity of 30 ms-1 .Find the kinetic energy of the sphere. (4-marks )
(b) Define “work” . Write down the unit of work in SI system. A woman push a child, who is
riding a tricycle, with a 200N force. The tricycle moves a distance of 2m and the work done
by the woman is 100J. Find the angle between the force and the displacement. (4-marks )
- (a) Define speed and velocity such that the two may be distinguished. An object moves with
an initial velocity of 4ms-1 . If it moves with a uniform acceleration of 2ms-2 find the
displacement after 20 s. (4-marks )
(b) A body moving with a constant acceleration reach the velocity 4ms-1 after 10s. If the
body start from rest , find the velocity after (a) 12s (b) 14s (c) 16s (d) 18s. Draw the
velocity time graph for the interval 10 s to 18 s. From the graph , find the velocities at
8s and 20s. (4marks )
Match each of the items in List A with the appropriate items in the list B. (7 marks)
List A List B
(a) Neutralization (i) it dissolves in noble metal gold
(b) Alum (ii) CaO Cl2.2 H2O
(c) Ammonium iron (II) sulphate (iii) show allotropy
(d) Aqua-regia (iv) reaction between any acid and a base
(e) Sulphur (v) dissociation constant of the indicator
(f) Bleaching powder (vi) K2SO4. Al2(SO4)3.24 H2O
(g) Kin (vii) (NH4)2 SO4.FeSO4.6H2O - Define the following terms. (8 marks)
Congratulations! This post has been upvoted from the communal account, @minnowsupport, by ngelay38 from the Minnow Support Project. It's a witness project run by aggroed, ausbitbank, teamsteem, theprophet0, someguy123, neoxian, followbtcnews, and netuoso. The goal is to help Steemit grow by supporting Minnows. Please find us at the Peace, Abundance, and Liberty Network (PALnet) Discord Channel. It's a completely public and open space to all members of the Steemit community who voluntarily choose to be there.
If you would like to delegate to the Minnow Support Project you can do so by clicking on the following links: 50SP, 100SP, 250SP, 500SP, 1000SP, 5000SP.
Be sure to leave at least 50SP undelegated on your account.
Downvoting a post can decrease pending rewards and make it less visible. Common reasons:
Submit