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Total questions: 10
Worksheet time: 50mins
To displace an object 10 m away a force F does a work of 800 J. In this case, the magnitude of force F is... N
8
16
25
80
100
A brick with mass of 2 kg is falling down from its place at the height of 5 meters. If the acceleration due to gravity is 10 m/s2. The kinetic energy of the brick when it hits the ground is... J
200
100
150
50
20
Two objects collide partially elastic and are isolated from all external forces. The correct statement is…
total linear momentum is conserved and kinetic energy is not conserved
total linear momentum is conserved and the velocity of the objects will be of equal magnitude, but opposite direction
the objects will stick together and moves as one after the collision
the kinetic energy of the system after the collision is equal to the kinetic energy of the system before the collision
the velocity of the objects will remain unchanged
A small car with mass of 2000 kg is moving eastward with velocity of 30 m/s and big car with mass of 4000 kg is moving southward with velocity of 20 m/s. The magnitude of momentum after colliding is... kgm/s.
60.000
80.000
100.000
120.000
140.000
If L, M, and T denote the dimensions of length, mass, and time, respectively. The dimensions of momentum is…
MLT-1
MLT-2
LTM-1
LT2 M-1
MT2 L-1
A gun of 2 kg in mass shoots a projectile of 2 g in mass and a velocity of 400 m/s. The velocity of the gun because of the repulsion is... m/s.
0.2
0.4
0.6
0.8
1
sebutir peluru bermassa 20 g ditembakkan kedalam sebuah balok kayu bermassa 9,98 kg yang diam. jika peluru menancap kedalam balok sehingga balok bergerak dengan kecepatan 30 cm/s, maka kecepatan awal peluru tersebut adalah... m/s
50
90
120
150
180
sebuah bola bilyar yang bergerak dengan laju v1 = 5 m/s pada arah +x menabrak bola lain dengan massa sama yang dalam keadaan diam. kedua bola terlihat berpencar dengan sudut 60o terhadap sumbu x. Berapa laju bola-bola tersebut?
2,5 m/s
3 m/s
5 m/s
7,5 m/s
10 m/s
If a ball with mass of 3 kg strikes a wall speed of 10 m/s at an angel of 60.0° to the horizontal line. It bounces off with the same speed and angle. Determine the average force exerted by the ball while the ball is in contact with the wall for 0.300 s
40 N
80 N
120 N
160 N
240 N
A basket ball fall down and hit the floor with velocity of 16 m/s. Then the ball bounce up with velocity of 12 m/s. Restitution coefficient of colliding is ...
1/2
2/3
3/4
4/3
1
