Physics Paper
The lndian High School Revision -Term 1 Grade:9
Answer as many as Possible:
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4)
State universal law of gravitation Express it mathematically. Differentiate between G' and 91 in tabtrlat fotm' 3) (a) What is acceleration ? Write ib unit. velocity' bi I)t"* velocity-time graPh, when an obiect has (i) unifortdy accelerated
(ii) uniformly retarded velocity. fror" that if u Uoayi" thrown ve*ically upwatd, the time of ascent is equal to the time
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of descent. Th;;r*h .ttracts the moon. Does the moon also attract the earth ? If it does, why does ttre earth not move towards the moon ? 6) A bullet of mass 1,0 g is fired with a velocity of 400 m/s from a gun of mass 4 kg' What is ,,xldge recoil velocity of the gun ? acts. 6*fril; *Jgr,, z sote th; direction in which itmoon Write an exPtession for it. Is the ? Why and the weight of ariobject same on the earth AB as one of ifs diametet' A 8) e cilcUar kachhas a circumference of L570 m with scooterist moves frorn A to B along the circular path with a uniform speed of 5 mls' Find the:
B
(b) displacement of the scooterist (Givenfl=3.14), (a) distance covered "ooterist, (c) time taken by the scooterist in reaching from A to B. Find : (a) the O) a man throws a ball of mass 0.5 kg ,"rfr"u[y upward with a velocity of. ?-S m/ s. of the maximum tfrL ball at the half way mark ioitiuf momentum of the batl (b) *oirunt
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height (gpven g=L0 m/s') back to 10) A body thrown in the vertically upward. dfuection rises upto,a h9igl-1t,,h" and comee (b) th* the position of its start. Calculate (u) th* total distance travelled by the body and displacement of the body. Under what condition will the magnitude of the displacement be equal to the distance travelled by uo object ? fil frrAri& is having a higher value of momerrtum - A bullet of mass 10 g moving with a velocity of 400m/s or a cicfet bait of mass 4009 thrown with the speed of 90 km/tr ?
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Answer as many as Possible:
ffi
4)
State universal law of gravitation Express it mathematically. Differentiate between G' and 91 in tabtrlat fotm' 3) (a) What is acceleration ? Write ib unit. velocity' bi I)t"* velocity-time graPh, when an obiect has (i) unifortdy accelerated
(ii) uniformly retarded velocity. fror" that if u Uoayi" thrown ve*ically upwatd, the time of ascent is equal to the time
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of descent. Th;;r*h .ttracts the moon. Does the moon also attract the earth ? If it does, why does ttre earth not move towards the moon ? 6) A bullet of mass 1,0 g is fired with a velocity of 400 m/s from a gun of mass 4 kg' What is ,,xldge recoil velocity of the gun ? acts. 6*fril; *Jgr,, z sote th; direction in which itmoon Write an exPtession for it. Is the ? Why and the weight of ariobject same on the earth AB as one of ifs diametet' A 8) e cilcUar kachhas a circumference of L570 m with scooterist moves frorn A to B along the circular path with a uniform speed of 5 mls' Find the:
B
(b) displacement of the scooterist (Givenfl=3.14), (a) distance covered "ooterist, (c) time taken by the scooterist in reaching from A to B. Find : (a) the O) a man throws a ball of mass 0.5 kg ,"rfr"u[y upward with a velocity of. ?-S m/ s. of the maximum tfrL ball at the half way mark ioitiuf momentum of the batl (b) *oirunt
USr
height (gpven g=L0 m/s') back to 10) A body thrown in the vertically upward. dfuection rises upto,a h9igl-1t,,h" and comee (b) th* the position of its start. Calculate (u) th* total distance travelled by the body and displacement of the body. Under what condition will the magnitude of the displacement be equal to the distance travelled by uo object ? fil frrAri& is having a higher value of momerrtum - A bullet of mass 10 g moving with a velocity of 400m/s or a cicfet bait of mass 4009 thrown with the speed of 90 km/tr ?
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